vf_scale: add endianness conversion pixel format in query_formats
fate-jpeg2000-dcinema: force output to xyz12le

Fixes Fate tests on big-endian configs.
Merge commit '5f87c277bd5caa09cc4f9061d4ccdd58dc121110'

* commit '5f87c277bd5caa09cc4f9061d4ccdd58dc121110':
  vf_scale: add endianness conversion pixel format in query_formats

Conflicts:
	libavfilter/vf_scale.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge remote-tracking branch 'qatar/master'

* qatar/master:
  fate-jpeg2000-dcinema: force output to xyz12le

Conflicts:
	tests/fate/video.mak

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Support decoding of Lagarith frame type FRAME_SOLID_COLOR.

Fixes bug 459.