10000l fix and use more mmx2/3dnow code for mpeg4 qpel which has been written and commited long time ago but appearently never used, qpel motion compensation is 5% faster
now


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@3435 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b