n4.3.9
swscale/ppc: Move VSX-using code to its own file
swscale: Replace illegal vector keyword usage in altivec code
swscale/ppc: Add av_unused to template vars only used in one includer
swscale: Fix AltiVec/VSX build with recent GCC
lsws/ppc/yuv2rgb_altivec: Replace vec_lvsl/vec_perm with vec_xl
Merge remote-tracking branch 'qatar/master'
ppc: don't return a value from a function declared void