Patch by Mathieu Malaterre mathieu malaterre gmail com

Originally committed as revision 14487 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 12631 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 9484 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8603 to svn://svn.ffmpeg.org/ffmpeg/trunk

Not only the repeated byte is calculated as (count ^ xor) + add
but also the raw encoding lenth byte is calculated as that too
patch by Xiaohui Sun sunxiaohui  dsp ac cn

Originally committed as revision 8602 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8601 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8600 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8599 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8598 to svn://svn.ffmpeg.org/ffmpeg/trunk