move dct_quantize and denoise_dct function pointers initialization to C functions after arch dependant initializations
move dct_quantize and denoise_dct function pointers initialization to C
functions after arch dependant initializations


git-svn-id: a4d7c1866f8397a4106e0b57fc4fbf792bbdaaaf@9375 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

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