* commit '8a067941':
  mpeg2: add sequence display extension information

Conflicts:
	libavcodec/mpeg12enc.c
	tests/ref/lavf/gxf
	tests/ref/lavf/mxf
	tests/ref/lavf/mxf_d10
	tests/ref/lavf/ts
	tests/ref/seek/lavf-gxf
	tests/ref/seek/lavf-mxf
	tests/ref/seek/lavf-ts
	tests/ref/seek/vsynth2-mpeg2-422
	tests/ref/seek/vsynth2-mpeg2-idct-int
	tests/ref/seek/vsynth2-mpeg2-ilace
	tests/ref/seek/vsynth2-mpeg2-ivlc-qprd
	tests/ref/seek/vsynth2-mpeg2-thread
	tests/ref/seek/vsynth2-mpeg2-thread-ivlc
	tests/ref/vsynth/vsynth1-mpeg2
	tests/ref/vsynth/vsynth1-mpeg2-422
	tests/ref/vsynth/vsynth1-mpeg2-idct-int
	tests/ref/vsynth/vsynth1-mpeg2-ilace
	tests/ref/vsynth/vsynth1-mpeg2-ivlc-qprd
	tests/ref/vsynth/vsynth1-mpeg2-thread
	tests/ref/vsynth/vsynth1-mpeg2-thread-ivlc
	tests/ref/vsynth/vsynth2-mpeg2
	tests/ref/vsynth/vsynth2-mpeg2-422
	tests/ref/vsynth/vsynth2-mpeg2-idct-int
	tests/ref/vsynth/vsynth2-mpeg2-ilace
	tests/ref/vsynth/vsynth2-mpeg2-ivlc-qprd
	tests/ref/vsynth/vsynth2-mpeg2-thread
	tests/ref/vsynth/vsynth2-mpeg2-thread-ivlc
Merged-by: Michael Niedermayer <michaelni@gmx.at>