raw mlp demuxer

Based on patch by Jeff Muizelaar <jrmuizel <at> gmail.org>
http://article.gmane.org/gmane.comp.video.ffmpeg.devel/57797

Originally committed as revision 13558 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/allformats.c

@@ -100,6 +100,7 @@ void av_register_all(void)
     REGISTER_MUXDEMUX (MATROSKA, matroska);
     REGISTER_MUXER    (MATROSKA_AUDIO, matroska_audio);
     REGISTER_MUXDEMUX (MJPEG, mjpeg);
+    REGISTER_DEMUXER  (MLP, mlp);
     REGISTER_DEMUXER  (MM, mm);
     REGISTER_MUXDEMUX (MMF, mmf);
     REGISTER_MUXDEMUX (MOV, mov);