adding AVVideoFrame
 moving quality, pict_type, key_frame, qscale_table, ... to AVVideoFrame
 removing obsolete variables in AVCodecContext
 skiping of MBs in b frames
 correctly initalizing AVCodecContext
 picture buffer cleanup

Originally committed as revision 1302 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 1276 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 1008 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 591 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 547 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 528 to svn://svn.ffmpeg.org/ffmpeg/trunk

(and fix) stream copying. By now force_pts it's just honoured by the MPEG
muxer. ASF could honour this also, but it should be fixed to use Tickers
first.
- MPEG audio decoder exports it's frame size in bytes.
- Hope this fix the floating point exception found in ffserver.

Originally committed as revision 382 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 128 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 88 to svn://svn.ffmpeg.org/ffmpeg/trunk