John Bowler 4891f1a5a8 Fix rgb_to_gray graylo==0 errors, build issues
Fixes to pngvalid for various reduced build configurations (eliminate unused
statics) and a fix for the case in rgb_to_gray when the digitize option reduces
graylo to 0, producing a large error.

Signed-off-by: John Bowler <jbowler@acm.org>
2015-12-13 18:02:31 -08:00
..
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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".