Imported from libpng-1.4.0beta8.tar
diff --git a/ANNOUNCE b/ANNOUNCE
index 754dd65..24d53e3 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.4.0beta7 - June 16, 2006
+Libpng 1.4.0beta8 - June 22, 2006
 
 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.
@@ -9,32 +9,32 @@
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   1.4.0beta7.tar.gz
-   1.4.0beta7.tar.bz2
+   1.4.0beta8.tar.gz
+   1.4.0beta8.tar.bz2
 
 Source files with LF line endings (for Unix/Linux) without the
 "configure" script
 
-   1.4.0beta7-no-config.tar.gz
-   1.4.0beta7-no-config.tar.bz2
+   1.4.0beta8-no-config.tar.gz
+   1.4.0beta8-no-config.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp140b07.zip
-   lp140b07.tar.bz2
+   lp140b08.zip
+   lp140b08.tar.bz2
 
 Project files
 
-   1.4.0beta7-project-netware.zip
-   1.4.0beta7-project-wince.zip
+   1.4.0beta8-project-netware.zip
+   1.4.0beta8-project-wince.zip
 
 Other information:
 
-   1.4.0beta7-README.txt
-   1.4.0beta7-KNOWNBUGS.txt
-   1.4.0beta7-LICENSE.txt
-   1.4.0beta7-Y2K-compliance.txt
+   1.4.0beta8-README.txt
+   1.4.0beta8-KNOWNBUGS.txt
+   1.4.0beta8-LICENSE.txt
+   1.4.0beta8-Y2K-compliance.txt
 
 Changes since the last public release (1.2.10):
 
@@ -111,7 +111,7 @@
   Revised configure.ac, Makefile.am, and many of the makefiles to write
     their defines in pngconf.h.
 
-version 1.4.0beta5 [June 16, 2006]
+version 1.4.0beta5 [June 22, 2006]
   Added a missing semicolon in Makefile.am and Makefile.in
   Deleted extraneous square brackets from configure.ac
 
@@ -141,11 +141,11 @@
   Revised INSTALL and autogen.sh
   Fixed typo in several makefiles (-W1 should be -Wl)
 
-version 1.2.11rc3 [June 16, 2006]
+version 1.2.11rc3 [June 22, 2006]
   Added one zero element to png_gamma_shift[] array in pngrtran.c to avoid
     reading out of bounds.
 
-version 1.4.0beta7 [June 16, 2006]
+version 1.4.0beta7 [June 22, 2006]
   Exported png_write_sig (Cosmin).
   Optimized buffer in png_handle_cHRM() (Cosmin).
   Set pHYs = 2835 x 2835 pixels per meter, and added
@@ -153,6 +153,10 @@
   Added png_set_benign_errors(), png_benign_error(), png_chunk_benign_error().
   Added typedef for png_int_32 and png_uint_32 on 64-bit systems.
 
+version 1.4.0beta8 [June 22, 2006]
+  Added demonstration of user chunk support in pngtest.c, to support the
+    public sTER chunk and a private vpAg chunk.
+
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit 
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement
diff --git a/CHANGES b/CHANGES
index ae8c739..917faf0 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1647,6 +1647,10 @@
   Added typedef for png_int_32 and png_uint_32 on 64-bit systems.
   Added "(unsigned long)" typecast on png_uint_32 variables in printf lists.
 
+version 1.4.0beta8 [June 22, 2006]
+  Added demonstration of user chunk support in pngtest.c, to support the
+    public sTER chunk and a private vpAg chunk.
+
 version 1.4.0betaN [future]
   Cleaned up error and warning messages.
   Implemented sTER chunk.
diff --git a/INSTALL b/INSTALL
index 8847550..b000bfa 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,5 +1,5 @@
 
-Installing libpng version 1.4.0beta7 - June 16, 2006
+Installing libpng version 1.4.0beta8 - June 22, 2006
 
 On Unix/Linux and similar systems, you can simply type
 
@@ -37,7 +37,7 @@
 correspond to the version of zlib that's installed.
 
 You can rename the directories that you downloaded (they
-might be called "libpng-1.4.0beta7" or "lpng109" and "zlib-1.2.1"
+might be called "libpng-1.4.0beta8" or "lpng109" and "zlib-1.2.1"
 or "zlib121") so that you have directories called "zlib" and "libpng".
 
 Your directory structure should look like this:
@@ -93,11 +93,11 @@
 
  makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
  makefile.elf      =>  Linux/ELF makefile symbol versioning,
-                       gcc, creates libpng14.so.1.1.4.0beta7)
+                       gcc, creates libpng14.so.1.1.4.0beta8)
  makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng14.so.1.1.4.0beta7)
+                       (gcc, creates libpng14.so.1.1.4.0beta8)
  makefile.gcmmx    =>  Linux/ELF makefile
-                       (gcc, creates libpng14.so.1.1.4.0beta7,
+                       (gcc, creates libpng14.so.1.1.4.0beta8,
                        uses assembler code tuned for Intel MMX platform)
  makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
  makefile.knr      =>  Archaic UNIX Makefile that converts files with
@@ -120,12 +120,12 @@
  makefile.openbsd  =>  OpenBSD makefile
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
  makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng14.so.1.1.4.0beta7)
+                       creates libpng14.so.1.1.4.0beta8)
  makefile.sunos    =>  Sun makefile
  makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng14.so.1.1.4.0beta7)
+                       creates libpng14.so.1.1.4.0beta8)
  makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng14.so.1.1.4.0beta7)
+                       creates libpng14.so.1.1.4.0beta8)
  makefile.32sunu   =>  Sun Ultra 32-bit makefile
  makefile.64sunu   =>  Sun Ultra 64-bit makefile
  makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
diff --git a/KNOWNBUG b/KNOWNBUG
index a74ec04..3d24640 100644
--- a/KNOWNBUG
+++ b/KNOWNBUG
@@ -1,5 +1,5 @@
 
-Known bugs in libpng version 1.4.0beta7
+Known bugs in libpng version 1.4.0beta8
 
 1. April 22, 2001: pnggccrd.c has been reported to crash on NetBSD when
    reading interlaced PNG files, when assembler code is enabled but running
diff --git a/LICENSE b/LICENSE
index abc0558..2905fd2 100644
--- a/LICENSE
+++ b/LICENSE
@@ -8,7 +8,7 @@
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-libpng versions 1.2.6, August 15, 2004, through 1.4.0beta7, June 16, 2006, are
+libpng versions 1.2.6, August 15, 2004, through 1.4.0beta8, June 22, 2006, are
 Copyright (c) 2004, 2006 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -106,4 +106,4 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-June 16, 2006
+June 22, 2006
diff --git a/README b/README
index beacdaf..d8f7076 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.4.0beta7 - June 16, 2006 (shared library 14.0)
+README for libpng version 1.4.0beta8 - June 22, 2006 (shared library 14.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
@@ -190,11 +190,11 @@
        descrip.mms      =>  VMS makefile for MMS or MMK
        makefile.std     =>  Generic UNIX makefile (cc, creates static libpng.a)
        makefile.elf     =>  Linux/ELF makefile symbol versioning,
-                            gcc, creates libpng14.so.1.1.4.0beta7)
+                            gcc, creates libpng14.so.1.1.4.0beta8)
        makefile.linux   =>  Linux/ELF makefile
-                            (gcc, creates libpng14.so.1.1.4.0beta7)
+                            (gcc, creates libpng14.so.1.1.4.0beta8)
        makefile.gcmmx   =>  Linux/ELF makefile
-                            (gcc, creates libpng14.so.1.1.4.0beta7,
+                            (gcc, creates libpng14.so.1.1.4.0beta8,
                             uses assembler code tuned for Intel MMX platform)
        makefile.gcc     =>  Generic makefile (gcc, creates static libpng.a)
        makefile.knr     =>  Archaic UNIX Makefile that converts files with
@@ -216,12 +216,12 @@
        makefile.openbsd =>  OpenBSD makefile
        makefile.sgi     =>  Silicon Graphics IRIX (cc, creates static lib)
        makefile.sggcc   =>  Silicon Graphics
-                            (gcc, creates libpng14.so.1.1.4.0beta7)
+                            (gcc, creates libpng14.so.1.1.4.0beta8)
        makefile.sunos   =>  Sun makefile
        makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng14.so.1.1.4.0beta7)
+                            (gcc, creates libpng14.so.1.1.4.0beta8)
        makefile.so9     =>  Solaris 9 makefile
-                            (gcc, creates libpng14.so.1.1.4.0beta7)
+                            (gcc, creates libpng14.so.1.1.4.0beta8)
        makefile.32sunu  =>  Sun Ultra 32-bit makefile
        makefile.64sunu  =>  Sun Ultra 64-bit makefile
        makefile.sco     =>  For SCO OSr5  ELF and Unixware 7 with Native cc
diff --git a/Y2KINFO b/Y2KINFO
index 4249eac..902e444 100644
--- a/Y2KINFO
+++ b/Y2KINFO
@@ -1,13 +1,13 @@
    Y2K compliance in libpng:
    =========================
 
-      June 16, 2006
+      June 22, 2006
 
       Since the PNG Development group is an ad-hoc body, we can't make
       an official declaration.
 
       This is your unofficial assurance that libpng from version 0.71 and
-      upward through 1.4.0beta7 are Y2K compliant.  It is my belief that earlier
+      upward through 1.4.0beta8 are Y2K compliant.  It is my belief that earlier
       versions were also Y2K compliant.
 
       Libpng only has three year fields.  One is a 2-byte unsigned integer
diff --git a/configure b/configure
index 1701a07..287ad98 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.59 for libpng 1.4.0beta7.
+# Generated by GNU Autoconf 2.59 for libpng 1.4.0beta8.
 #
 # Report bugs to <png-mng-implement@lists.sourceforge.net>.
 #
@@ -423,8 +423,8 @@
 # Identity of this package.
 PACKAGE_NAME='libpng'
 PACKAGE_TARNAME='libpng'
-PACKAGE_VERSION='1.4.0beta7'
-PACKAGE_STRING='libpng 1.4.0beta7'
+PACKAGE_VERSION='1.4.0beta8'
+PACKAGE_STRING='libpng 1.4.0beta8'
 PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
 
 ac_unique_file="pngget.c"
@@ -954,7 +954,7 @@
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures libpng 1.4.0beta7 to adapt to many kinds of systems.
+\`configure' configures libpng 1.4.0beta8 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1020,7 +1020,7 @@
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng 1.4.0beta7:";;
+     short | recursive ) echo "Configuration of libpng 1.4.0beta8:";;
    esac
   cat <<\_ACEOF
 
@@ -1167,7 +1167,7 @@
 test -n "$ac_init_help" && exit 0
 if $ac_init_version; then
   cat <<\_ACEOF
-libpng configure 1.4.0beta7
+libpng configure 1.4.0beta8
 generated by GNU Autoconf 2.59
 
 Copyright (C) 2003 Free Software Foundation, Inc.
@@ -1181,7 +1181,7 @@
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by libpng $as_me 1.4.0beta7, which was
+It was created by libpng $as_me 1.4.0beta8, which was
 generated by GNU Autoconf 2.59.  Invocation command line was
 
   $ $0 $@
@@ -1824,7 +1824,7 @@
 
 # Define the identity of the package.
  PACKAGE='libpng'
- VERSION='1.4.0beta7'
+ VERSION='1.4.0beta8'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -1979,7 +1979,7 @@
 
 
 
-PNGLIB_VERSION=1.4.0beta7
+PNGLIB_VERSION=1.4.0beta8
 PNGLIB_MAJOR=14
 PNGLIB_MINOR=0
 
@@ -20683,7 +20683,7 @@
 } >&5
 cat >&5 <<_CSEOF
 
-This file was extended by libpng $as_me 1.4.0beta7, which was
+This file was extended by libpng $as_me 1.4.0beta8, which was
 generated by GNU Autoconf 2.59.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -20746,7 +20746,7 @@
 
 cat >>$CONFIG_STATUS <<_ACEOF
 ac_cs_version="\\
-libpng config.status 1.4.0beta7
+libpng config.status 1.4.0beta8
 configured by $0, generated by GNU Autoconf 2.59,
   with options \\"`echo "$ac_configure_args" | sed 's/[\\""\`\$]/\\\\&/g'`\\"
 
diff --git a/configure.ac b/configure.ac
index efa47aa..9d92dd9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,12 +18,12 @@
 
 dnl Version number stuff here:
 
-AC_INIT([libpng], [1.4.0beta7], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.4.0beta8], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE
 
-PNGLIB_VERSION=1.4.0beta7
+PNGLIB_VERSION=1.4.0beta8
 PNGLIB_MAJOR=14
 PNGLIB_MINOR=0
 
diff --git a/libpng.3 b/libpng.3
index 7c715e3..26a30de 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "June 16, 2006"
+.TH LIBPNG 3 "June 22, 2006"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta7
+libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta8
 .SH SYNOPSIS
 \fI\fB
 
@@ -833,7 +833,7 @@
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.4.0beta7 - June 16, 2006
+ libpng version 1.4.0beta8 - June 22, 2006
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2005 Glenn Randers-Pehrson
@@ -3748,13 +3748,13 @@
 
 .SH IX. Y2K Compliance in libpng
 
-June 16, 2006
+June 22, 2006
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
 
 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.4.0beta7 are Y2K compliant.  It is my belief that earlier
+upward through 1.4.0beta8 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.
 
 Libpng only has three year fields.  One is a 2-byte unsigned integer that
@@ -3916,7 +3916,7 @@
  1.2.10              13    10210  12.so.0.10[.0]
  1.4.0beta1-6        14    10400  14.so.0.0[.0]
  1.2.11beta1-4       13    10210  12.so.0.10[.0]
- 1.4.0beta7          14    10400  14.so.0.0[.0]
+ 1.4.0beta7-8        14    10400  14.so.0.0[.0]
 
 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -3972,7 +3972,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.4.0beta7 - June 16, 2006:
+Libpng version 1.4.0beta8 - June 22, 2006:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -3993,7 +3993,7 @@
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-libpng versions 1.2.6, August 15, 2004, through 1.4.0beta7, June 16, 2006, are
+libpng versions 1.2.6, August 15, 2004, through 1.4.0beta8, June 22, 2006, are
 Copyright (c) 2004-2006 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -4092,7 +4092,7 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-June 16, 2006
+June 22, 2006
 
 .\" end of man page
 
diff --git a/libpng.txt b/libpng.txt
index 8142170..9a9f928 100644
--- a/libpng.txt
+++ b/libpng.txt
@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.4.0beta7 - June 16, 2006
+ libpng version 1.4.0beta8 - June 22, 2006
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2005 Glenn Randers-Pehrson
@@ -2915,13 +2915,13 @@
 
 IX. Y2K Compliance in libpng
 
-June 16, 2006
+June 22, 2006
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
 
 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.4.0beta7 are Y2K compliant.  It is my belief that earlier
+upward through 1.4.0beta8 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.
 
 Libpng only has three year fields.  One is a 2-byte unsigned integer that
diff --git a/libpngpf.3 b/libpngpf.3
index 4585911..f22288d 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "June 16, 2006"
+.TH LIBPNGPF 3 "June 22, 2006"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta7
+libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta8
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP
diff --git a/png.5 b/png.5
index ac8b198..6aaa734 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "June 16, 2006"
+.TH PNG 5 "June 22, 2006"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index 55ac71a..217b996 100644
--- a/png.c
+++ b/png.c
@@ -13,7 +13,7 @@
 #include "pngintrn.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_4_0beta7 Your_png_h_is_not_version_1_4_0beta7;
+typedef version_1_4_0beta8 Your_png_h_is_not_version_1_4_0beta8;
 
 /* Version information for C files.  This had better match the version
  * string defined in png.h.  */
@@ -637,7 +637,7 @@
 png_get_copyright(png_structp png_ptr)
 {
    if (&png_ptr != NULL)  /* silence compiler warning about unused png_ptr */
-   return ((png_charp) "\n libpng version 1.4.0beta7 - June 16, 2006\n\
+   return ((png_charp) "\n libpng version 1.4.0beta8 - June 22, 2006\n\
    Copyright (c) 1998-2006 Glenn Randers-Pehrson\n\
    Copyright (c) 1996-1997 Andreas Dilger\n\
    Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n");
diff --git a/png.h b/png.h
index 82577b3..8cfaa5b 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.4.0beta7 - June 16, 2006
+ * libpng version 1.4.0beta8 - June 22, 2006
  * Copyright (c) 1998-2006 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -9,7 +9,7 @@
  * Authors and maintainers:
  *  libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
  *  libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
- *  libpng versions 0.97, January 1998, through 1.4.0beta7 - June 16, 2006: Glenn
+ *  libpng versions 0.97, January 1998, through 1.4.0beta8 - June 22, 2006: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -121,7 +121,7 @@
  *    1.2.10                  13    10210  12.so.0.10[.0]
  *    1.4.0beta1-5            14    10400  14.so.0.0[.0]
  *    1.2.11beta1-4           13    10210  12.so.0.10[.0]
- *    1.4.0beta7              14    10400  14.so.0.0[.0]
+ *    1.4.0beta7-8            14    10400  14.so.0.0[.0]
  *
  *    Henceforth the source version will match the shared-library major
  *    and minor numbers; the shared-library major version number will be
@@ -151,7 +151,7 @@
  * If you modify libpng you may insert additional notices immediately following
  * this sentence.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.4.0beta7, June 16, 2006, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.4.0beta8, June 22, 2006, are
  * Copyright (c) 2004, 2006 Glenn Randers-Pehrson, and are
  * distributed according to the same disclaimer and license as libpng-1.2.5
  * with the following individual added to the list of Contributing Authors:
@@ -263,13 +263,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    June 16, 2006
+ *    June 22, 2006
  *
  *    Since the PNG Development group is an ad-hoc body, we can't make
  *    an official declaration.
  *
  *    This is your unofficial assurance that libpng from version 0.71 and
- *    upward through 1.4.0beta7 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.4.0beta8 are Y2K compliant.  It is my belief that earlier
  *    versions were also Y2K compliant.
  *
  *    Libpng only has three year fields.  One is a 2-byte unsigned integer
@@ -325,9 +325,9 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.4.0beta7"
+#define PNG_LIBPNG_VER_STRING "1.4.0beta8"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.4.0beta7 - June 16, 2006 (header)\n"
+   " libpng version 1.4.0beta8 - June 22, 2006 (header)\n"
 
 #define PNG_LIBPNG_VER_SONUM   1
 #define PNG_LIBPNG_VER_DLLNUM  14
@@ -339,7 +339,7 @@
 /* This should match the numeric part of the final component of
  * PNG_LIBPNG_VER_STRING, omitting any leading zero: */
 
-#define PNG_LIBPNG_VER_BUILD  7
+#define PNG_LIBPNG_VER_BUILD  8
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -1363,7 +1363,7 @@
 /* This triggers a compiler error in png.c, if png.c and png.h
  * do not agree upon the version number.
  */
-typedef png_structp version_1_4_0beta7;
+typedef png_structp version_1_4_0beta8;
 
 typedef png_struct FAR * FAR * png_structpp;
 
diff --git a/pngconf.h b/pngconf.h
index 3a65015..d419b34 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.4.0beta7 - June 16, 2006
+ * libpng version 1.4.0beta8 - June 22, 2006
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2006 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/pngintrn.h b/pngintrn.h
index 044329a..9c5fedc 100644
--- a/pngintrn.h
+++ b/pngintrn.h
@@ -1,7 +1,7 @@
 
 /* pngintrn.h - internal header file for libpng
  *
- * libpng version 1.4.0beta7 - June 16, 2006
+ * libpng version 1.4.0beta8 - June 22, 2006
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2006 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -256,6 +256,7 @@
 #define PNG_sBIT const png_byte png_sBIT[5] = {115,  66,  73,  84, '\0'}
 #define PNG_sPLT const png_byte png_sPLT[5] = {115,  80,  76,  84, '\0'}
 #define PNG_sRGB const png_byte png_sRGB[5] = {115,  82,  71,  66, '\0'}
+#define PNG_sTER const png_byte png_sTER[5] = {115,  84,  69,  82, '\0'}
 #define PNG_tEXt const png_byte png_tEXt[5] = {116,  69,  88, 116, '\0'}
 #define PNG_tIME const png_byte png_tIME[5] = {116,  73,  77,  69, '\0'}
 #define PNG_tRNS const png_byte png_tRNS[5] = {116,  82,  78,  83, '\0'}
diff --git a/pngtest.c b/pngtest.c
index bf0535e..bbaa341 100644
--- a/pngtest.c
+++ b/pngtest.c
@@ -550,6 +550,77 @@
 #endif /* PNG_USER_MEM_SUPPORTED && PNG_DEBUG */
 /* END of code to test memory allocation/deallocation */
 
+
+
+
+/* Demonstration of user chunk support of the sTER and vpAg chunks */
+#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+
+/* (sTER is a public chunk not yet understood by libpng.  vpAg is a private
+chunk used in ImageMagick to store "virtual page" size).  */
+
+static png_uint_32 user_chunk_data[4];
+
+    /* 0: stereo mode + 1
+     * 1: vpag width
+     * 2: vpag height
+     * 3: vpag units
+     */
+
+static int read_user_chunk_callback(png_struct *png_ptr,
+   png_unknown_chunkp chunk)
+{
+  png_uint_32
+    *user_chunk_data;
+
+  /* Return one of the following: */
+     /* return (-n);  chunk had an error */
+     /* return (0);  did not recognize */
+     /* return (n);  success */
+
+  /* The unknown chunk structure contains the chunk data:
+   * png_byte name[5];
+   * png_byte *data;
+   * png_size_t size;
+   *
+   *  Note that libpng has already taken care of the CRC handling.
+   */
+
+  if (chunk->name[0] == 115 && chunk->name[1] ==  84 &&     /* s  T */
+      chunk->name[2] == 69 && chunk-> name[3] ==  82)       /* E  R */
+     {
+       /* Found sTER chunk */
+       if (chunk->size != 1)
+         return (-1); /* Error return */
+       if (chunk->data[0] != 0 && chunk->data[0] != 1)
+          return (-1);  /* Invalid mode */
+       user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr);
+       user_chunk_data[0]=chunk->data[0]+1;
+       return (1);
+     }
+  if (chunk->name[0] != 118 || chunk->name[1] != 112 ||    /* v  p */
+      chunk->name[2] !=  65 || chunk->name[3] != 103)      /* A  g */
+    return (0); /* Did not recognize */
+
+  /* Found ImageMagick vpAg chunk */
+
+  if (chunk->size != 9)
+    return (-1); /* Error return */
+
+  user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr);
+
+  user_chunk_data[1]=(unsigned long) ((chunk->data[0] << 24) |
+     (chunk->data[1] << 16) | (chunk->data[2] << 8) | chunk->data[3]);
+  user_chunk_data[2]=(unsigned long) ((chunk->data[4] << 24) |
+     (chunk->data[5] << 16) | (chunk->data[6] << 8) | chunk->data[7]);
+  user_chunk_data[3]=(unsigned long) chunk->data[8];
+
+  return (1);
+
+}
+#endif
+/* END of code to demonstrate user chunk support */
+
 /* Test one file */
 int
 test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
@@ -608,6 +679,16 @@
    png_set_error_fn(read_ptr, (png_voidp)inname, pngtest_error,
        pngtest_warning);
 #endif
+
+#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+  user_chunk_data[0]=0;
+  user_chunk_data[1]=0;
+  user_chunk_data[2]=0;
+  user_chunk_data[3]=0;
+  png_set_read_user_chunk_fn(read_ptr, user_chunk_data,
+    read_user_chunk_callback);
+#endif
+
 #ifdef PNG_WRITE_SUPPORTED
 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
    write_ptr = png_create_write_struct_2(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
@@ -976,6 +1057,7 @@
       }
    }
 #endif
+
 #if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
    {
       png_unknown_chunkp unknowns;
@@ -1003,6 +1085,46 @@
    png_write_info_before_PLTE(write_ptr, write_info_ptr);
  */
    png_write_info(write_ptr, write_info_ptr);
+
+#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+   if (user_chunk_data[0] != 0)
+   {
+     png_byte png_sTER[5] = {115,  84,  69,  82, '\0'};
+
+     unsigned char
+       ster_chunk_data[1];
+
+     if(verbose)
+        fprintf(STDERR, "stereo mode = %lu\n",
+          (unsigned long)(user_chunk_data[0]-1));
+     ster_chunk_data[0]=(unsigned char)(user_chunk_data[0]-1);
+     png_write_chunk(write_ptr,png_sTER,ster_chunk_data,1);
+   }
+   if (user_chunk_data[1] != 0 || user_chunk_data[2] != 0)
+   {
+     png_byte png_vpAg[5] = {118, 112,  65, 103, '\0'};
+
+     unsigned char
+       vpag_chunk_data[9];
+
+     if(verbose)
+        fprintf(STDERR, "vpAg = %lu x %lu, units=%lu\n",
+          (unsigned long)user_chunk_data[1],
+          (unsigned long)user_chunk_data[2],
+          (unsigned long)user_chunk_data[3]);
+     vpag_chunk_data[0]=(user_chunk_data[1]>>24) & 0xff;
+     vpag_chunk_data[1]=(user_chunk_data[1]>>16) & 0xff;
+     vpag_chunk_data[2]=(user_chunk_data[1]>>8 ) & 0xff;
+     vpag_chunk_data[3]=(user_chunk_data[1]    ) & 0xff;
+     vpag_chunk_data[4]=(user_chunk_data[2]>>24) & 0xff;
+     vpag_chunk_data[5]=(user_chunk_data[2]>>16) & 0xff;
+     vpag_chunk_data[6]=(user_chunk_data[2]>>8 ) & 0xff;
+     vpag_chunk_data[7]=(user_chunk_data[2]    ) & 0xff;
+     vpag_chunk_data[8]=(user_chunk_data[3]    ) & 0xff;
+     png_write_chunk(write_ptr, png_vpAg,vpag_chunk_data,9);
+   }
+
+#endif
 #endif
 
 #ifdef SINGLE_ROWBUF_ALLOC
@@ -1489,4 +1611,4 @@
 }
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_4_0beta7 your_png_h_is_not_version_1_4_0beta7;
+typedef version_1_4_0beta8 your_png_h_is_not_version_1_4_0beta8;
diff --git a/pngtest.png b/pngtest.png
index 3776e6c..cfdd36f 100644
--- a/pngtest.png
+++ b/pngtest.png
Binary files differ
diff --git a/scripts/libpng-config-head.in b/scripts/libpng-config-head.in
index fcd9825..25d884b 100755
--- a/scripts/libpng-config-head.in
+++ b/scripts/libpng-config-head.in
@@ -8,7 +8,7 @@
 
 # Modeled after libxml-config.
 
-version=1.4.0beta7
+version=1.4.0beta8
 prefix=""
 libdir=""
 libs=""
diff --git a/scripts/libpng.pc.in b/scripts/libpng.pc.in
index 07838af..8e29993 100644
--- a/scripts/libpng.pc.in
+++ b/scripts/libpng.pc.in
@@ -5,6 +5,6 @@
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.4.0beta7
+Version: 1.4.0beta8
 Libs: -L${libdir} -lpng14
 Cflags: -I${includedir}
diff --git a/scripts/makefile.32sunu b/scripts/makefile.32sunu
index 6169e71..a8d8855 100644
--- a/scripts/makefile.32sunu
+++ b/scripts/makefile.32sunu
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng14
 PNGMAJ = 1
-PNGMIN = 1.4.0beta7
+PNGMIN = 1.4.0beta8
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.64sunu b/scripts/makefile.64sunu
index b47e8fe..8482a3c 100644
--- a/scripts/makefile.64sunu
+++ b/scripts/makefile.64sunu
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng14
 PNGMAJ = 1
-PNGMIN = 1.4.0beta7
+PNGMIN = 1.4.0beta8
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.aix b/scripts/makefile.aix
index 3280e67..d5350c0 100644
--- a/scripts/makefile.aix
+++ b/scripts/makefile.aix
@@ -20,7 +20,7 @@
 
 LIBNAME=libpng14
 PNGMAJ = 1
-PNGMIN = 1.4.0beta7
+PNGMIN = 1.4.0beta8
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 prefix=/usr/local
diff --git a/scripts/makefile.beos b/scripts/makefile.beos
index 4eeb8b7..9f5ec4f 100644
--- a/scripts/makefile.beos
+++ b/scripts/makefile.beos
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng14
 PNGMAJ = 1
-PNGMIN = 1.4.0beta7
+PNGMIN = 1.4.0beta8
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.cygwin b/scripts/makefile.cygwin
index ed70551..173975d 100644
--- a/scripts/makefile.cygwin
+++ b/scripts/makefile.cygwin
@@ -65,7 +65,7 @@
 LIBNAME = libpng14
 PNGMAJ = 1
 CYGDLL = 14
-PNGMIN = 1.4.0beta7
+PNGMIN = 1.4.0beta8
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=cygpng$(CYGDLL).dll
diff --git a/scripts/makefile.darwin b/scripts/makefile.darwin
index 21e97c5..5bb4b9d 100644
--- a/scripts/makefile.darwin
+++ b/scripts/makefile.darwin
@@ -19,7 +19,7 @@
 # Library name:
 LIBNAME = libpng14
 PNGMAJ = 1
-PNGMIN = 1.4.0beta7
+PNGMIN = 1.4.0beta8
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.dec b/scripts/makefile.dec
index e0595a4..d007c91 100644
--- a/scripts/makefile.dec
+++ b/scripts/makefile.dec
@@ -5,7 +5,7 @@
 
 # Library name:
 PNGMAJ = 1
-PNGMIN = 1.4.0beta7
+PNGMIN = 1.4.0beta8
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng14
 
diff --git a/scripts/makefile.elf b/scripts/makefile.elf
index 26ad8ce..7a1721d 100644
--- a/scripts/makefile.elf
+++ b/scripts/makefile.elf
@@ -12,7 +12,7 @@
 # Library name:
 LIBNAME = libpng14
 PNGMAJ = 1
-PNGMIN = 1.4.0beta7
+PNGMIN = 1.4.0beta8
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.gcmmx b/scripts/makefile.gcmmx
index df6d6b1..4811c67 100644
--- a/scripts/makefile.gcmmx
+++ b/scripts/makefile.gcmmx
@@ -16,7 +16,7 @@
 # Library name:
 LIBNAME = libpng14
 PNGMAJ = 1
-PNGMIN = 1.4.0beta7
+PNGMIN = 1.4.0beta8
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.hp64 b/scripts/makefile.hp64
index cfda341..20ba216 100644
--- a/scripts/makefile.hp64
+++ b/scripts/makefile.hp64
@@ -18,7 +18,7 @@
 # Library name:
 LIBNAME = libpng14
 PNGMAJ = 1
-PNGMIN = 1.4.0beta7
+PNGMIN = 1.4.0beta8
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.hpgcc b/scripts/makefile.hpgcc
index 4c9a187..1f2ea25 100644
--- a/scripts/makefile.hpgcc
+++ b/scripts/makefile.hpgcc
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng14
 PNGMAJ = 1
-PNGMIN = 1.4.0beta7
+PNGMIN = 1.4.0beta8
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.hpux b/scripts/makefile.hpux
index 2f82a37..2ec5e14 100644
--- a/scripts/makefile.hpux
+++ b/scripts/makefile.hpux
@@ -18,7 +18,7 @@
 # Library name:
 LIBNAME = libpng14
 PNGMAJ = 1
-PNGMIN = 1.4.0beta7
+PNGMIN = 1.4.0beta8
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.linux b/scripts/makefile.linux
index 25c3292..e115b9d 100644
--- a/scripts/makefile.linux
+++ b/scripts/makefile.linux
@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME = libpng14
 PNGMAJ = 1
-PNGMIN = 1.4.0beta7
+PNGMIN = 1.4.0beta8
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.mingw b/scripts/makefile.mingw
index 8b8af77..d99fea1 100644
--- a/scripts/makefile.mingw
+++ b/scripts/makefile.mingw
@@ -66,7 +66,7 @@
 LIBNAME = libpng14
 PNGMAJ = 1
 MINGDLL = 14
-PNGMIN = 1.4.0beta7
+PNGMIN = 1.4.0beta8
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=libpng$(MINGDLL).dll
diff --git a/scripts/makefile.ne12bsd b/scripts/makefile.ne12bsd
index 5a327db..d853320 100644
--- a/scripts/makefile.ne12bsd
+++ b/scripts/makefile.ne12bsd
@@ -14,7 +14,7 @@
 
 LIB=	png12
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.4.0beta7
+SHLIB_MINOR=	1.4.0beta8
 SRCS=	pnggccrd.c png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 		pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 		pngwtran.c pngmem.c pngerror.c pngpread.c
diff --git a/scripts/makefile.netbsd b/scripts/makefile.netbsd
index c0c5e94..658e850 100644
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -13,7 +13,7 @@
 
 LIB=	png
 SHLIB_MAJOR=	3
-SHLIB_MINOR=	1.4.0beta7
+SHLIB_MINOR=	1.4.0beta8
 SRCS=	pnggccrd.c png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 		pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 		pngwtran.c pngmem.c pngerror.c pngpread.c
diff --git a/scripts/makefile.openbsd b/scripts/makefile.openbsd
index bd8f419..138e055 100644
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -8,7 +8,7 @@
 MANDIR= ${PREFIX}/man/cat
 
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.4.0beta7
+SHLIB_MINOR=	1.4.0beta8
 
 LIB=	png
 SRCS=	png.c pngerror.c pnggccrd.c pngget.c pngmem.c pngpread.c \
diff --git a/scripts/makefile.sco b/scripts/makefile.sco
index 0302f43..64d753f 100644
--- a/scripts/makefile.sco
+++ b/scripts/makefile.sco
@@ -9,7 +9,7 @@
 # Library name:
 LIBNAME = libpng14
 PNGMAJ = 1
-PNGMIN = 1.4.0beta7
+PNGMIN = 1.4.0beta8
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.sggcc b/scripts/makefile.sggcc
index f1853e3..aeda081 100644
--- a/scripts/makefile.sggcc
+++ b/scripts/makefile.sggcc
@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME=libpng14
 PNGMAJ = 1
-PNGMIN = 1.4.0beta7
+PNGMIN = 1.4.0beta8
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.sgi b/scripts/makefile.sgi
index d45ce07..3a8d287 100644
--- a/scripts/makefile.sgi
+++ b/scripts/makefile.sgi
@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME=libpng14
 PNGMAJ = 1
-PNGMIN = 1.4.0beta7
+PNGMIN = 1.4.0beta8
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/makefile.so9 b/scripts/makefile.so9
index 2780152..4306906 100644
--- a/scripts/makefile.so9
+++ b/scripts/makefile.so9
@@ -8,7 +8,7 @@
 
 # Library name:
 PNGMAJ = 1
-PNGMIN = 1.4.0beta7
+PNGMIN = 1.4.0beta8
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng14
 
diff --git a/scripts/makefile.solaris b/scripts/makefile.solaris
index b165121..7a1f5cf 100644
--- a/scripts/makefile.solaris
+++ b/scripts/makefile.solaris
@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng14
 PNGMAJ = 1
-PNGMIN = 1.4.0beta7
+PNGMIN = 1.4.0beta8
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
diff --git a/scripts/pngos2.def b/scripts/pngos2.def
index b3f4106..2ae709d 100644
--- a/scripts/pngos2.def
+++ b/scripts/pngos2.def
@@ -2,7 +2,7 @@
 ; PNG.LIB module definition file for OS/2
 ;----------------------------------------
 
-; Version 1.4.0beta7
+; Version 1.4.0beta8
 
 LIBRARY		PNG
 DESCRIPTION	"PNG image compression library for OS/2"
diff --git a/scripts/pngw32.def b/scripts/pngw32.def
index 1fc8f64..f1f488b 100644
--- a/scripts/pngw32.def
+++ b/scripts/pngw32.def
@@ -5,7 +5,7 @@
 LIBRARY
 
 EXPORTS
-;Version 1.4.0beta7
+;Version 1.4.0beta8
   png_build_grayscale_palette  @1
   png_chunk_error      @3
   png_chunk_warning      @4