h264: fix interpretation of interleved stereo modes

Column and row frame packing arrangements were inverted.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
avcodec: Undeprecate reordered_opaque

It allows attaching other external, opaque data to the frame and passing it
through the reordering process, for cases when the caller wants other data
than just the plain packet pts.  There is no way to cleanly achieve this
without the field.
swscale: Undeprecate sws_getContext()

sws_getCachedContext is not a full replacement for the function.
Merge commit 'a7e541c9926d531a100ba0d36f4e56956dd84651'

* commit 'a7e541c9926d531a100ba0d36f4e56956dd84651':
  h264: fix interpretation of interleved stereo modes

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'ad1ee5fa75a3d69d54c0691048939e94ab5a7f0d'

* commit 'ad1ee5fa75a3d69d54c0691048939e94ab5a7f0d':
  avcodec: Undeprecate reordered_opaque

Conflicts:
	doc/APIchanges
	libavcodec/version.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'bb789016d423d2cfacd2904ac66257bdf7f0964e'

* commit 'bb789016d423d2cfacd2904ac66257bdf7f0964e':
  swscale: Undeprecate sws_getContext()

Conflicts:
	libswscale/version.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
doc/APIchanges: Correct function reference.

The commit bb789016d423d2cfacd2904ac66257bdf7f0964e
un-deprecated sws_getContext()

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