Merge commit 'ca411fc1'

* commit 'ca411fc1':
  avcodec: Remove broken MMI optimizations

Conflicts:
	arch.mak
	configure
	libavcodec/avcodec.h
	libavcodec/mips/Makefile
	libavcodec/mips/dsputil_mmi.c
	libavcodec/mips/idct_mmi.c
	libavcodec/mips/mmi.h
	libavcodec/mips/mpegvideo_mmi.c
	libavcodec/options_table.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>