YV12 support (warning this is experimental & wont work with offical huffyuv...

YV12 support (warning this is experimental & wont work with offical huffyuv but there is a approx. 20% speed & compression gain)
10l flush_put_bits()


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@1214 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b