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
mpegts: K&R formatting cosmetics

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
mpegts: Forward error codes in various functions

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
svq3: directly set pix_fmt and color_range
lavc: er: remove unused variable size

The code using it was removed in d66e305bd1b.