[libpng17] 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 d1ce2de..1e0eed9 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.7.0beta33 - February 26, 2014
+Libpng 1.7.0beta33 - 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.
@@ -561,7 +561,9 @@
   Minor editing of contrib/arm-neon/README and contrib/examples/*.c
   Moved some documentation from png.h to libpng.3 and libpng-manual.txt
 
-Version 1.7.0beta33 [February 26, 2014]
+Version 1.7.0beta33 [February 27, 2014]
+  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 760a553..fd679ee 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4850,7 +4850,9 @@
   Minor editing of contrib/arm-neon/README and contrib/examples/*.c
   Moved some documentation from png.h to libpng.3 and libpng-manual.txt
 
-Version 1.7.0beta33 [February 26, 2014]
+Version 1.7.0beta33 [February 27, 2014]
+  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 6497492..424e3b6 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 1.7.0beta33 - February 26, 2014
+ libpng version 1.7.0beta33 - 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 1.7.0beta33 - February 26, 2014
+ libpng versions 0.97, January 1998, through 1.7.0beta33 - February 27, 2014
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2014 Glenn Randers-Pehrson
 
@@ -275,9 +275,9 @@
 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
+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.
@@ -5116,7 +5116,7 @@
 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.
 
@@ -5446,7 +5446,7 @@
 
 XVII. Y2K Compliance in libpng
 
-February 26, 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 5b2732f..919c53c 100644
--- a/libpng.3
+++ b/libpng.3
@@ -1,4 +1,4 @@
-.TH LIBPNG 3 "February 26, 2014"
+.TH LIBPNG 3 "February 27, 2014"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.7.0beta33
 .SH SYNOPSIS
@@ -494,7 +494,7 @@
 .SH LIBPNG.TXT
 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.7.0beta33 - February 26, 2014
+ libpng version 1.7.0beta33 - February 27, 2014
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2014 Glenn Randers-Pehrson
@@ -505,7 +505,7 @@
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.7.0beta33 - February 26, 2014
+ libpng versions 0.97, January 1998, through 1.7.0beta33 - February 27, 2014
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2014 Glenn Randers-Pehrson
 
@@ -769,9 +769,9 @@
 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
+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.
@@ -5611,7 +5611,7 @@
 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.
 
@@ -5941,7 +5941,7 @@
 
 .SH XVII. Y2K Compliance in libpng
 
-February 26, 2014
+February 27, 2014
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
@@ -6211,7 +6211,7 @@
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.7.0beta33 - February 26, 2014:
+Libpng version 1.7.0beta33 - 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).
 
@@ -6234,7 +6234,7 @@
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.7.0beta33, February 26, 2014, are
+libpng versions 1.2.6, August 15, 2004, through 1.7.0beta33, 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
@@ -6333,7 +6333,7 @@
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-February 26, 2014
+February 27, 2014
 
 .\" end of man page
 
diff --git a/scripts/pnglibconf.dfa b/scripts/pnglibconf.dfa
index d63b159..6a01a62 100644
--- a/scripts/pnglibconf.dfa
+++ b/scripts/pnglibconf.dfa
@@ -171,7 +171,7 @@
 
 # NONE
 
-# 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