Move some repetitive SATD asm into a macro.
Move some repetitive SATD asm into a macro.

Conflicts:
	src/strategies/x86_avx/picture_x86.asm

lu-zero/kvazaar,lu-zero/kvazaar,ultravideo/kvazaar,lu-zero/kvazaar,ultravideo/kvazaar,ultravideo/kvazaar,ultravideo/kvazaar,ultravideo/kvazaar,lu-zero/kvazaar