move luma tc0 related init into asm 5% faster filter_mb_fast() on P3
move luma tc0 related init into asm
5% faster filter_mb_fast() on P3


git-svn-id: a4d7c1866f8397a4106e0b57fc4fbf792bbdaaaf@6884 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg