rename --cpu (and related variables) to --arch as this option always  allowed to select an architecture, not a specific cpu
rename --cpu (and related variables) to --arch as this option always 
allowed to select an architecture, not a specific cpu


git-svn-id: a4d7c1866f8397a4106e0b57fc4fbf792bbdaaaf@6719 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

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