mpegvideo: move ff_draw_horiz_band() to mpegutils.c

Drop the mpegvideo dependency for svq3 in configure.
mpegvideo: remove h264-only fields
h264 does not depend on mpegvideo any more
RGBA64 pixel formats

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
isom: fix C99-style declaration
codec_desc: update dvaudio tag
png: K&R formatting cosmetics
png: Support rgb48 and rgba64 encoding
raw, nut: Support rgba64 encoding
img2: add j2c file extension

Some applications use the j2c extension for jpeg2000 codestream files.
tiff: Support rgba encoding
fraps: set color_range
mjpeg: set color_range
mdec: set color_range
ljpeg: check color_range
libx264: check color_range
avcodec/dxva2: fix pointers after H264Picture

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'be039278b5ebd8075d90a3508db2aed5adf59e02'

* commit 'be039278b5ebd8075d90a3508db2aed5adf59e02':
  mpegvideo: move ff_draw_horiz_band() to mpegutils.c

Conflicts:
	libavcodec/Makefile

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '7245a0ae872d4f65396a37d13f5d1d2c2efe11c2'

* commit '7245a0ae872d4f65396a37d13f5d1d2c2efe11c2':
  mpegvideo: remove h264-only fields

Conflicts:
	libavcodec/mpegvideo.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/vdpau: update ff_vdpau_h264_set_reference_frames() to H264Picture

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