n5.1.7
swscale/ppc: Move VSX-using code to its own file
swscale: Replace illegal vector keyword usage in altivec code
Include attributes.h directly
lavu: move LOCAL_ALIGNED from internal.h to mem_internal.h
lsws/ppc/yuv2rgb_altivec: Fix build in non-VSX environments with Clang
Merge remote-tracking branch 'qatar/master'
sws: rename SwsContext.swscale to convert_unscaled