~15% faster.
Also add an mmxext version that takes advantage of the new code, and
build it alongside with the mmx version only on x86_32.
Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: James Almer <jamrial@gmail.com>
* commit '8d686ca59db14900ad5c12b547fb8a7afc8b0b94':
dsputil: Split off *_8x8basis to a separate context
Conflicts:
libavcodec/dsputil.c
libavcodec/mpegvideo_enc.c
libavcodec/x86/dsputilenc_mmx.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>