Remove explicit filename from Doxygen @file commands.
Passing an explicit filename to this command is only necessary if thedocumentation in the @file block refers to a file different from theone the block resides in.
Originally committed as revision 22921 to svn://svn.ffmpeg.org/ffmpeg/trunk
Adobe Filmstrip muxer and demuxer
Originally committed as revision 21212 to svn://svn.ffmpeg.org/ffmpeg/trunk