PMCs, and with Apple's CHUD it's fairly easy too. No reason to keep useless
    code around
2) make the PPC perf stuff a configure option
3) make put_pixels16_altivec a bit faster by unrolling the loop by 4
patch by (Romain Dolbeau <dolbeau at irisa dot fr>)


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@2022 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b