mpegvideo: Drop unused MPEG_BUF_SIZE and CHROMA_444 defines
mpegvideo: Move ME_MAP_* defines to the only place they are used
mpegvideo: Move QMAT_SHIFT* defines to the only place they are used
Merge commit 'ff85334375c6733c6116ea3686f128b4a11f33e7'

* commit 'ff85334375c6733c6116ea3686f128b4a11f33e7':
  mpegvideo: Drop unused MPEG_BUF_SIZE and CHROMA_444 defines

CHROMA_444 is not removed as we do support CHROMA_444 and use the
identifier

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '4fbb62a21bd04bf261da2382d5ba6c249c702af8'

* commit '4fbb62a21bd04bf261da2382d5ba6c249c702af8':
  mpegvideo: Move ME_MAP_* defines to the only place they are used

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'd8520d3ee032bf18f28897e0109f44b405caf5e3'

* commit 'd8520d3ee032bf18f28897e0109f44b405caf5e3':
  mpegvideo: Move QMAT_SHIFT* defines to the only place they are used

Conflicts:
	libavcodec/mpegvideo.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
x86: hevc_mc: replace simple leas by adds

lea is detrimental for those simple cases. No impact overall to
the change though.

Before:
15017 decicycles in q, 1016152 runs, 32424 skips
15382 decicycles in q_bi, 1013673 runs, 34903 skips
3713 decicycles in e, 2074534 runs, 22618 skips
3901 decicycles in e_bi, 2065509 runs, 31643 skips
7852 decicycles in q_uni, 520165 runs, 4123 skips
2398 decicycles in e_uni, 1043339 runs, 5237 skips

After:
14898 decicycles in q, 1016295 runs, 32281 skips
15119 decicycles in q_bi, 1015392 runs, 33184 skips
3682 decicycles in e, 2073224 runs, 23928 skips
3720 decicycles in e_bi, 2065043 runs, 32109 skips
7643 decicycles in q_uni, 520280 runs, 4008 skips
2363 decicycles in e_uni, 1043780 runs, 4796 skips

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