mjpeg a dump header bitstream filter, modifies bitstream to be decoded by quicktime

Originally committed as revision 7201 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/allcodecs.c

@@ -284,5 +284,6 @@ void avcodec_register_all(void)
     av_register_bitstream_filter(&noise_bsf);
     av_register_bitstream_filter(&mp3_header_compress_bsf);
     av_register_bitstream_filter(&mp3_header_decompress_bsf);
+    av_register_bitstream_filter(&mjpega_dump_header_bsf);
 }