dsputil: Split clear_block*/fill_block* off into a separate context
Merge commit 'e74433a8e6fc00c8dbde293c97a3e45384c2c1d9'

* commit 'e74433a8e6fc00c8dbde293c97a3e45384c2c1d9':
  dsputil: Split clear_block*/fill_block* off into a separate context

Conflicts:
	configure
	libavcodec/asvdec.c
	libavcodec/dnxhddec.c
	libavcodec/dnxhdenc.c
	libavcodec/dsputil.h
	libavcodec/eamad.c
	libavcodec/intrax8.c
	libavcodec/mjpegdec.c
	libavcodec/ppc/dsputil_ppc.c
	libavcodec/vc1dec.c
	libavcodec/x86/dsputil_init.c
	libavcodec/x86/dsputil_mmx.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/x86/lossless_videodsp: Fix size of values read for left/left_top

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