diff --git a/ANNOUNCE b/ANNOUNCE
index 12bf16a..6d72af3 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.5.5beta01 - July 12, 2011
+Libpng 1.5.5beta01 - July 13, 2011
 
 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.
@@ -26,7 +26,7 @@
 
 Changes since the last public release (1.5.4):
 
-Version 1.5.5beta01 [July 12, 2011]
+Version 1.5.5beta01 [July 13, 2011]
   Fixed some typos and made other minor changes in the manual.
   Updated contrib/pngminus/makefile.std (Samuli Souminen)
 
diff --git a/CHANGES b/CHANGES
index 8256c4a..1bde27c 100644
--- a/CHANGES
+++ b/CHANGES
@@ -3509,7 +3509,7 @@
 Version 1.5.4 [July 7, 2011]
   No changes.
 
-Version 1.5.5beta01 [July 12, 2011]
+Version 1.5.5beta01 [July 13, 2011]
   Fixed some typos and made other minor changes in the manual.
   Updated contrib/pngminus/makefile.std (Samuli Souminen)
 
diff --git a/LICENSE b/LICENSE
index 99d3d44..2773059 100644
--- a/LICENSE
+++ b/LICENSE
@@ -10,7 +10,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.5.5beta01, July 8, 2011, are
+libpng versions 1.2.6, August 15, 2004, through 1.5.5beta01, July 13, 2011, are
 Copyright (c) 2004, 2006-2011 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
@@ -108,4 +108,4 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-July 8, 2011
+July 13, 2011
diff --git a/Makefile.in b/Makefile.in
index 20e0111..4324ecd 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -160,7 +160,7 @@
 distcleancheck_listfiles = find . -type f -print
 
 #distribute headers in /usr/include/libpng/*
-pkgincludedir = $(includedir)/$(PNGLIB_BASENAME)
+pkgincludedir = $(DESTDIR)$(includedir)/$(PNGLIB_BASENAME)
 ACLOCAL = @ACLOCAL@
 AMTAR = @AMTAR@
 AR = @AR@
diff --git a/README b/README
index 3a6ef6c..76ce482 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-README for libpng version 1.5.5beta01 - July 8, 2011 (shared library 15.0)
+README for libpng version 1.5.5beta01 - July 13, 2011 (shared library 15.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
diff --git a/libpng-manual.txt b/libpng-manual.txt
index 6a7ac86..e306466 100644
--- a/libpng-manual.txt
+++ b/libpng-manual.txt
@@ -1,6 +1,6 @@
 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.5.5beta01 - July 12, 2011
+ libpng version 1.5.5beta01 - July 13, 2011
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.5.5beta01 - July 12, 2011
+ libpng versions 0.97, January 1998, through 1.5.5beta01 - July 13, 2011
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
 
@@ -4447,7 +4447,7 @@
 
 XIV. Y2K Compliance in libpng
 
-July 12, 2011
+July 13, 2011
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
diff --git a/libpng.3 b/libpng.3
index 2a88cb5..76fd2ec 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "July 12, 2011"
+.TH LIBPNG 3 "July 13, 2011"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.5.5beta01
 .SH SYNOPSIS
@@ -955,7 +955,7 @@
 .SH LIBPNG.TXT
 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.5.5beta01 - July 12, 2011
+ libpng version 1.5.5beta01 - July 13, 2011
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
@@ -966,7 +966,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.5.5beta01 - July 12, 2011
+ libpng versions 0.97, January 1998, through 1.5.5beta01 - July 13, 2011
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2011 Glenn Randers-Pehrson
 
@@ -5402,7 +5402,7 @@
 
 .SH XIV. Y2K Compliance in libpng
 
-July 12, 2011
+July 13, 2011
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
@@ -5660,7 +5660,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.5.5beta01 - July 12, 2011:
+Libpng version 1.5.5beta01 - July 13, 2011:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -5683,7 +5683,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.5.5beta01, July 12, 2011, are
+libpng versions 1.2.6, August 15, 2004, through 1.5.5beta01, July 13, 2011, are
 Copyright (c) 2004,2006-2007 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
@@ -5782,7 +5782,7 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-July 12, 2011
+July 13, 2011
 
 .\" end of man page
 
diff --git a/libpngpf.3 b/libpngpf.3
index 160d12d..aa7df30 100644
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,4 +1,4 @@
-.TH LIBPNGPF 3 "July 8, 2011"
+.TH LIBPNGPF 3 "July 13, 2011"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.5.5beta01
 (private functions)
diff --git a/png.5 b/png.5
index c21a296..7a73ba6 100644
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "July 8, 2011"
+.TH PNG 5 "July 13, 2011"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
diff --git a/png.c b/png.c
index 73bace8..4b5cae4 100644
--- a/png.c
+++ b/png.c
@@ -542,8 +542,8 @@
 /* Initialize the default input/output functions for the PNG file.  If you
  * use your own read or write routines, you can call either png_set_read_fn()
  * or png_set_write_fn() instead of png_init_io().  If you have defined
- * PNG_NO_STDIO, you must use a function of your own because "FILE *" isn't
- * necessarily available.
+ * PNG_NO_STDIO or otherwise disabled PNG_STDIO_SUPPORTED, you must use a
+ * function of your own because "FILE *" isn't necessarily available.
  */
 void PNGAPI
 png_init_io(png_structp png_ptr, png_FILE_p fp)
@@ -617,13 +617,13 @@
 #else
 #  ifdef __STDC__
    return PNG_STRING_NEWLINE \
-     "libpng version 1.5.5beta01 - July 8, 2011" PNG_STRING_NEWLINE \
+     "libpng version 1.5.5beta01 - July 13, 2011" PNG_STRING_NEWLINE \
      "Copyright (c) 1998-2011 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
      "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
      "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
      PNG_STRING_NEWLINE;
 #  else
-      return "libpng version 1.5.5beta01 - July 8, 2011\
+      return "libpng version 1.5.5beta01 - July 13, 2011\
       Copyright (c) 1998-2011 Glenn Randers-Pehrson\
       Copyright (c) 1996-1997 Andreas Dilger\
       Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
diff --git a/png.h b/png.h
index 16aa446..290d126 100644
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.5.5beta01 - July 8, 2011
+ * libpng version 1.5.5beta01 - July 13, 2011
  * Copyright (c) 1998-2011 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.)
@@ -11,7 +11,7 @@
  * 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 1.5.5beta01 - July 8, 2011: Glenn
+ *   libpng versions 0.97, January 1998, through 1.5.5beta01 - July 13, 2011: Glenn
  *   See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -188,7 +188,7 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.5.5beta01, July 8, 2011, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.5.5beta01, July 13, 2011, are
  * Copyright (c) 2004, 2006-2011 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:
@@ -300,7 +300,7 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    July 8, 2011
+ *    July 13, 2011
  *
  *    Since the PNG Development group is an ad-hoc body, we can't make
  *    an official declaration.
@@ -363,7 +363,7 @@
 /* Version information for png.h - this should match the version in png.c */
 #define PNG_LIBPNG_VER_STRING "1.5.5beta01"
 #define PNG_HEADER_VERSION_STRING \
-     " libpng version 1.5.5beta01 - July 8, 2011\n"
+     " libpng version 1.5.5beta01 - July 13, 2011\n"
 
 #define PNG_LIBPNG_VER_SONUM   15
 #define PNG_LIBPNG_VER_DLLNUM  15
diff --git a/pngconf.h b/pngconf.h
index 3d1c104..a8a363c 100644
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.5.5beta01 - July 8, 2011
+ * libpng version 1.5.5beta01 - July 13, 2011
  *
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
diff --git a/projects/vstudio/readme.txt b/projects/vstudio/readme.txt
index c27e6e7..aaacaa1 100644
--- a/projects/vstudio/readme.txt
+++ b/projects/vstudio/readme.txt
@@ -1,7 +1,7 @@
 
 VisualStudio instructions
 
-libpng version 1.5.5beta01 - July 8, 2011
+libpng version 1.5.5beta01 - July 13, 2011
 
 Copyright (c) 1998-2010 Glenn Randers-Pehrson
 
diff --git a/projects/vstudio/zlib.props b/projects/vstudio/zlib.props
index 5eadcf6..511857a 100644
--- a/projects/vstudio/zlib.props
+++ b/projects/vstudio/zlib.props
@@ -2,7 +2,7 @@
 <!--
  * zlib.props - location of zlib source
  *
- * libpng version 1.5.5beta01 - July 8, 2011
+ * libpng version 1.5.5beta01 - July 13, 2011
  *
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  *
diff --git a/scripts/README.txt b/scripts/README.txt
index cd78ada..9474295 100644
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,5 +1,5 @@
 
-Makefiles for  libpng version 1.5.5beta01 - July 8, 2011
+Makefiles for  libpng version 1.5.5beta01 - July 13, 2011
 
 pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.linux    =>  Linux/ELF makefile