[libpng16] Minor update to documentation and CHANGES/ANNOUNCE files.

ANNOUNCE

 
-Libpng 1.6.11beta06 - May 7, 2014
+Libpng 1.6.11beta06 - May 10, 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.
@@ -49,10 +49,11 @@ Version 1.6.11beta03 [April 6, 2014]
 
 Version 1.6.11beta04 [April 19, 2014]
   Made progressive reading of interlaced images consistent with the
-    behavior of the sequential reader and consistent with the manual,
-    by moving some code out of the PNG_READ_INTERLACING_SUPPORTED blocks.
-    The row_callback now receives the proper pass number and unexpanded rows,
-    when png_combine_row is not used or not built,
+    behavior of the sequential reader and consistent with the manual, by
+    moving some code out of the PNG_READ_INTERLACING_SUPPORTED blocks. The
+    row_callback now receives the proper pass number and unexpanded rows, when
+    png_combine_row() isn't built or used, and png_set_interlace_handling()
+    is not called.
   Allow PNG_sRGB_PROFILE_CHECKING = (-1) to mean no sRGB profile checking.
 
 Version 1.6.11beta05 [April 26, 2014]
@@ -61,7 +62,7 @@ Version 1.6.11beta05 [April 26, 2014]
     "Not recognizing known sRGB profile that has been edited" warning for
     ICC V2 profiles that lack the MD5 signature in the profile header.
 
-Version 1.6.11beta06 [May 7, 2014]
+Version 1.6.11beta06 [May 10, 2014]
   Added PNG_SKIP_sRGB_CHECK_PROFILE choice for png_set_option().
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net

CHANGES

@@ -4900,10 +4900,11 @@ Version 1.6.11beta03 [April 6, 2014]
 
 Version 1.6.11beta04 [April 19, 2014]
   Made progressive reading of interlaced images consistent with the
-    behavior of the sequential reader and consistent with the manual,
-    by moving some code out of the PNG_READ_INTERLACING_SUPPORTED blocks.
-    The row_callback now receives the proper pass number and unexpanded rows,
-    when png_combine_row is not used or not built,
+    behavior of the sequential reader and consistent with the manual, by
+    moving some code out of the PNG_READ_INTERLACING_SUPPORTED blocks. The
+    row_callback now receives the proper pass number and unexpanded rows, when
+    png_combine_row() isn't built or used, and png_set_interlace_handling()
+    is not called.
   Allow PNG_sRGB_PROFILE_CHECKING = (-1) to mean no sRGB profile checking.
 
 Version 1.6.11beta05 [April 26, 2014]
@@ -4912,7 +4913,7 @@ Version 1.6.11beta05 [April 26, 2014]
     "Not recognizing known sRGB profile that has been edited" warning for
     ICC V2 profiles that lack the MD5 signature in the profile header.
 
-Version 1.6.11beta06 [May 7, 2014]
+Version 1.6.11beta06 [May 10, 2014]
   Added PNG_SKIP_sRGB_CHECK_PROFILE choice for png_set_option().
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net

libpng-manual.txt

 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.6.11beta06 - May 7, 2014
+ libpng version 1.6.11beta06 - May 10, 2014
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2014 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@ libpng-manual.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.6.11beta06 - May 7, 2014
+ libpng versions 0.97, January 1998, through 1.6.11beta06 - May 10, 2014
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2014 Glenn Randers-Pehrson
 
@@ -5045,6 +5045,10 @@ means of
     png_set_option(ping, PNG_SKIP_sRGB_CHECK_PROFILE,
         PNG_OPTION_ON);
 
+It's not a good idea to do this if you are using the "simplified API",
+which needs to be able to recognize an sRGB profile conveyed via the iCCP
+chunk.
+
 The PNG spec requirement that only grayscale profiles may appear in images
 with color type 0 or 4 and that even if the image only contains gray pixels,
 only RGB profiles may appear in images with color type 2, 3, or 6, is now
@@ -5269,7 +5273,7 @@ Other rules can be inferred by inspecting the libpng source.
 
 XVI. Y2K Compliance in libpng
 
-May 7, 2014
+May 10, 2014
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.

libpng.3

-.TH LIBPNG 3 "May 7, 2014"
+.TH LIBPNG 3 "May 10, 2014"
 .SH NAME
 libpng \- Portable Network Graphics (PNG) Reference Library 1.6.11beta06
 .SH SYNOPSIS
@@ -504,7 +504,7 @@ Following is a copy of the libpng-manual.txt file that accompanies libpng.
 .SH LIBPNG.TXT
 libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.6.11beta06 - May 7, 2014
+ libpng version 1.6.11beta06 - May 10, 2014
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2014 Glenn Randers-Pehrson
@@ -515,7 +515,7 @@ libpng-manual.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.6.11beta06 - May 7, 2014
+ libpng versions 0.97, January 1998, through 1.6.11beta06 - May 10, 2014
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2014 Glenn Randers-Pehrson
 
@@ -5549,6 +5549,10 @@ means of
     png_set_option(ping, PNG_SKIP_sRGB_CHECK_PROFILE,
         PNG_OPTION_ON);
 
+It's not a good idea to do this if you are using the "simplified API",
+which needs to be able to recognize an sRGB profile conveyed via the iCCP
+chunk.
+
 The PNG spec requirement that only grayscale profiles may appear in images
 with color type 0 or 4 and that even if the image only contains gray pixels,
 only RGB profiles may appear in images with color type 2, 3, or 6, is now
@@ -5773,7 +5777,7 @@ Other rules can be inferred by inspecting the libpng source.
 
 .SH XVI. Y2K Compliance in libpng
 
-May 7, 2014
+May 10, 2014
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
@@ -6070,7 +6074,7 @@ possible without all of you.
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.6.11beta06 - May 7, 2014:
+Libpng version 1.6.11beta06 - May 10, 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).
 
@@ -6093,7 +6097,7 @@ this sentence.
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.6.11beta06, May 7, 2014, are
+libpng versions 1.2.6, August 15, 2004, through 1.6.11beta06, May 10, 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
@@ -6192,7 +6196,7 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-May 7, 2014
+May 10, 2014
 
 .\" end of man page
 

pngtrans.c

@@ -328,6 +328,9 @@ png_do_swap(png_row_infop row_info, png_bytep row)
       for (i = 0; i < istop; i++, rp += 2)
       {
 #ifdef PNG_BUILTIN_BSWAP16_SUPPORTED
+         /* Feature added to libpng-1.6.11 for testing purposes, not
+          * enabled by default.
+          */
          *(png_uint_16*)rp = __builtin_bswap16(*(png_uint_16*)rp);
 #else
          png_byte t = *rp;