ppc: fft: Build AltiVec optimizations in the standard way
Merge commit 'ffa4d4ef0bd66c4e8bde7357b69bdedc78123ea8'

* commit 'ffa4d4ef0bd66c4e8bde7357b69bdedc78123ea8':
  ppc: fft: Build AltiVec optimizations in the standard way

Conflicts:
	libavcodec/ppc/Makefile

Merged-by: Michael Niedermayer <michaelni@gmx.at>
avfilter/lavfutils: remove redundant variable init

Found-by: CSA
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/avuienc: move pointer declaration to where its used

Found-by: CSA
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>