[libpng15] Fixed typos in the manual and in scripts/pnglibconf.dfa

(CFLAGS -> CPPFLAGS and PNG_USR_CONFIG -> PNG_USER_CONFIG).
diff --git a/ANNOUNCE b/ANNOUNCE
index 534c7fe..eccb56a 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.5.19beta01 - February 17, 2014
+Libpng 1.5.19beta01 - February 27, 2014
 
 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.
@@ -27,10 +27,12 @@
 
 Changes since the last public release (1.5.18):
 
-Version 1.5.19beta01 [February 17, 2014]
+Version 1.5.19beta01 [February 27, 2014]
   Moved redefines of png_error(), png_warning(), png_chunk_error(),
     and png_chunk_warning() from pngpriv.h to png.h to make them visible
     to libpng-calling applications.
+  Fixed typos in the manual and in scripts/pnglibconf.dfa (CFLAGS -> CPPFLAGS
+    and PNG_USR_CONFIG -> PNG_USER_CONFIG).
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/CHANGES b/CHANGES
index ea72693..68bba14 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4203,10 +4203,12 @@
 Version 1.5.18 [February 6, 2014]
   No changes.
 
-Version 1.5.19beta01 [February 17, 2014]
+Version 1.5.19beta01 [February 27, 2014]
   Moved redefines of png_error(), png_warning(), png_chunk_error(),
     and png_chunk_warning() from pngpriv.h to png.h to make them visible
     to libpng-calling applications.
+  Fixed typos in the manual and in scripts/pnglibconf.dfa (CFLAGS -> CPPFLAGS
+    and PNG_USR_CONFIG -> PNG_USER_CONFIG).
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/libpng-manual.txt b/libpng-manual.txt
index c756da9..e1998b5 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 1.5.19beta01 - February 6, 2014
+ libpng version 1.5.19beta01 - February 27, 2014
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2014 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.5.19beta01 - February 6, 2014
+ libpng versions 0.97, January 1998, through 1.5.19beta01 - February 27, 2014
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2014 Glenn Randers-Pehrson
 
@@ -255,10 +255,10 @@
 contrib/pngminim/*.  See the "$(PNGCONF):" target in the makefile and
 pngusr.dfa in these directories.
 
-C. Configuration using PNG_USR_CONFIG
+C. Configuration using PNG_USER_CONFIG
 
-If -DPNG_USR_CONFIG is added to the CFLAGS when pnglibconf.h is built the file
-pngusr.h will automatically be included before the options in
+If -DPNG_USER_CONFIG is added to the CPPFLAGS when pnglibconf.h is built,
+the file pngusr.h will automatically be included before the options in
 scripts/pnglibconf.dfa are processed.  Your pngusr.h file should contain only
 macro definitions turning features on or off or setting settings.
 
@@ -4503,7 +4503,7 @@
 build of pnglibconf.h and it is never included in an application build.
 
 The rarely used alternative of adding a list of feature macros to the
-CFLAGS setting in the build also still works; however, the macros will be
+CPPFLAGS setting in the build also still works; however, the macros will be
 copied to pnglibconf.h and this may produce macro redefinition warnings
 when the individual C files are compiled.
 
@@ -4673,7 +4673,7 @@
 
 XIV. Y2K Compliance in libpng
 
-February 6, 2014
+February 27, 2014
 
 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 5e76f9c..7af6114 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "February 6, 2014"
+.TH LIBPNG 3 "February 27, 2014"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.5.19beta01
 .SH SYNOPSIS
@@ -492,7 +492,7 @@
 .SH LIBPNG.TXT
 Libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.5.19beta01 - February 6, 2014
+ libpng version 1.5.19beta01 - February 27, 2014
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2014 Glenn Randers-Pehrson
@@ -503,7 +503,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.5.19beta01 - February 6, 2014
+ libpng versions 0.97, January 1998, through 1.5.19beta01 - February 27, 2014
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2014 Glenn Randers-Pehrson
 
@@ -747,10 +747,10 @@
 contrib/pngminim/*.  See the "$(PNGCONF):" target in the makefile and
 pngusr.dfa in these directories.
 
-C. Configuration using PNG_USR_CONFIG
+C. Configuration using PNG_USER_CONFIG
 
-If \-DPNG_USR_CONFIG is added to the CFLAGS when pnglibconf.h is built the file
-pngusr.h will automatically be included before the options in
+If \-DPNG_USER_CONFIG is added to the CPPFLAGS when pnglibconf.h is built,
+the file pngusr.h will automatically be included before the options in
 scripts/pnglibconf.dfa are processed.  Your pngusr.h file should contain only
 macro definitions turning features on or off or setting settings.
 
@@ -4996,7 +4996,7 @@
 build of pnglibconf.h and it is never included in an application build.
 
 The rarely used alternative of adding a list of feature macros to the
-CFLAGS setting in the build also still works; however, the macros will be
+CPPFLAGS setting in the build also still works; however, the macros will be
 copied to pnglibconf.h and this may produce macro redefinition warnings
 when the individual C files are compiled.
 
@@ -5166,7 +5166,7 @@
 
 .SH XIV. Y2K Compliance in libpng
 
-February 6, 2014
+February 27, 2014
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
@@ -5464,7 +5464,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.5.19beta01 - February 6, 2014:
+Libpng version 1.5.19beta01 - February 27, 2014:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -5487,7 +5487,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.5.19beta01, February 6, 2014, are
+libpng versions 1.2.6, August 15, 2004, through 1.5.19beta01, February 27, 2014, 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
@@ -5586,7 +5586,7 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-February 6, 2014
+February 27, 2014
 
 .\" end of man page
 
diff --git a/scripts/pnglibconf.dfa b/scripts/pnglibconf.dfa
index 2b44aec..357d283 100644
--- a/scripts/pnglibconf.dfa
+++ b/scripts/pnglibconf.dfa
@@ -149,7 +149,7 @@
 @#  endif
 @#endif
 
-# Note that PNG_USR_CONFIG only has an effect when building
+# Note that PNG_USER_CONFIG only has an effect when building
 # pnglibconf.h
 
 setting USER_CONFIG