Libpng 1.2.20rc4 - September 1, 2007

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.

Files available for download:

Source files with LF line endings (for Unix/Linux) and with a
"configure" script

   libpng-1.2.20rc4.tar.gz
   libpng-1.2.20rc4.tar.bz2

Source files with LF line endings (for Unix/Linux) without the
"configure" script

   libpng-1.2.20rc4-no-config.tar.gz
   libpng-1.2.20rc4-no-config.tar.bz2

Source files with CRLF line endings (for Windows), without the
"configure" script

   lp1220r04.zip
   lp1220r04.tar.bz2

Project files

   libpng-1.2.20rc4-project-netware.zip
   libpng-1.2.20rc4-project-wince.zip

Other information:

   libpng-1.2.20rc4-README.txt
   libpng-1.2.20rc4-KNOWNBUGS.txt
   libpng-1.2.20rc4-LICENSE.txt
   libpng-1.2.20rc4-Y2K-compliance.txt

Changes since the last public release (1.2.19):

version 1.2.20beta01 [August 19, 2007]
  Fixed problem with compiling pnggccrd.c on Intel-Apple platforms.
  Added PNG_NO_ERROR_TEXT feature, with demo in contrib/pngminim
  Removed define PNG_WARN_UNINITIALIZED_ROW 1 /* 0: warning; 1: error */
    because it caused some trouble.

version 1.2.20beta02 [August 20, 2007]
  Avoid compiling pnggccrd.c on Intel-Apple platforms.

version 1.2.20beta03 [August 20, 2007]
  Added "/D PNG_NO_MMX_CODE" to the non-mmx builds of projects/visualc6
    and visualc71.

version 1.2.20beta04 [August 21, 2007]
  Revised pngvcrd.c for improved efficiency (Steve Snyder).

version 1.2.20rc1 [August 23, 2007]
  Revised pngconf.h to set PNG_NO_MMX_CODE for gcc-3.x compilers.

version 1.2.20rc2 [August 27, 2007]
  Revised scripts/CMakeLists.txt
  Revised #ifdefs to ensure one and only one of pnggccrd.c, pngvcrd.c,
    or part of pngrutil.c is selected.

version 1.2.20rc3 [September 1, 2007]
  Remove a little more code in pngwutil.c when PNG_NO_WRITE_FILTER is selected.
  Added /D _CRT_SECURE_NO_WARNINGS to visual6c and visualc71 projects.
  Compile png_mmx_support() in png.c even when PNG_NO_MMX_CODE is defined.
  Restored a "superfluous" #ifdef that was removed from 1.2.20rc2 pnggccrd.c,
    breaking the png_mmx_support() function.

version 1.2.20rc4 [September 1, 2007]
  Removed Intel contributions (MMX, Optimized C).

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Glenn R-P