Add raw MLP muxer.

Originally committed as revision 18652 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/allformats.c

@@ -102,7 +102,7 @@ void av_register_all(void)
     REGISTER_MUXDEMUX (MATROSKA, matroska);
     REGISTER_MUXER    (MATROSKA_AUDIO, matroska_audio);
     REGISTER_MUXDEMUX (MJPEG, mjpeg);
-    REGISTER_DEMUXER  (MLP, mlp);
+    REGISTER_MUXDEMUX (MLP, mlp);
     REGISTER_DEMUXER  (MM, mm);
     REGISTER_MUXDEMUX (MMF, mmf);
     REGISTER_MUXDEMUX (MOV, mov);