This update for pngcheck fixes the following issues:
version update to 3.0.3 [boo#1202662]
fixed a crash bug (and probable vulnerability) in large (MNG) LOOP chunks
fixed a divide-by-zero crash bug (and probable vulnerability)
in interlaced images with extra compressed data beyond the
nominal end of the image data (found by 'chiba of topsec alpha
lab')
version update to 3.0.0
tweaked color definitions slightly to work better on terminals with white/light backgrounds
fixed DHDR (pre-MNG-1.0) bug identified by Winfried szukw000@arcor.de
added eXIf support (GRR: added check for II/MM/unknown format)
converted static const help/usage-related strings to macros so -Werror=format-security doesn't trigger (Ben Beasley)
added (help2man-generated) man pages for all three utils added top-level LICENSE file; fixed various compiler warnings