Otherwise doxygen complains about ambiguous filenames when files exist
under the same name in different subdirectories.
Originally committed as revision 16912 to svn://svn.ffmpeg.org/ffmpeg/trunk
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
utils.c: In function ‘avcodec_get_context_defaults2’:
utils.c:793: warning: assignment discards qualifiers from pointer target type
Originally committed as revision 11938 to svn://svn.ffmpeg.org/ffmpeg/trunk
when building doxygen docs
patch by mark cox melbournemark plus ffmpeg minus devel chez gmail dot com
Originally committed as revision 8866 to svn://svn.ffmpeg.org/ffmpeg/trunk
