Consistently apply this rule: the guard name is obtained from the
filename by stripping the leading "lib", converting '/' and '.' to
'_' and uppercasing the resulting name. Guard names in the root
directory have to be prefixed by "FFMPEG_".
Originally committed as revision 15120 to svn://svn.ffmpeg.org/ffmpeg/trunk
source. This patch fixes decoding of some samples from Phantasmagoria 2
(they use delta tables N1, not N0 as the rest of files).
patch by the author, Kostya Shishkov
< kostya -- dot -- shishkov -- at -- gmail -- dot -- com >
Originally committed as revision 4679 to svn://svn.ffmpeg.org/ffmpeg/trunk
