John Bowler c5bc9b668d Fix (work round) rgb-to-gray issues in libpng 1.6
The previous attempts to ignore the errors in the code aren't quite enough to
deal with the 'channel selection' encoding added to libpng 1.7; abort.
pngvalid.c is changed to drop this encoding in prior versions.

Signed-off-by: John Bowler <jbowler@acm.org>
2015-09-26 21:43:07 -07:00
..
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This "contrib" directory contains contributions which are not necessarily under
the libpng license, although all are open source.  They are not part of
libpng proper and are not used for building the library, although some are used
for testing the library via "make check".