* qatar/master:
  dcadec: Add some logging before returning on error

Conflicts:
	libavcodec/dcadec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'f058f384':
  configure: Do not use pthread_create to check for pthread
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

* cigaes/master:
  lavc/srtenc: use bprint for text buffers.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Improve feedback.

Also move FFM section up in the file, and rename it.

Fix trac ticket #3120.

They are only needed by removelogo.
This fixes a link failure in shared builds when compiling with
removelogo disabled but Lavf/SwS enabled
Signed-off-by: James Almer <jamrial@gmail.com>
Reviewed-by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Based on a patch by Michael Niedermayer.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Certain instrumentation addons leads to a false positive in configure
and link failures at the end of the build phase.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

* cus/stable:
  ffmpeg: ensure that -fix_sub_duration doesnt create subtitles with zero duration
  ffmpeg: free empty subtitles as well in transcode_subtitles
  ffmpeg: do not pass possibly undefined subtitles to sub2video_update
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  go2meeting: disallow tile dimensions that are not multiple of 16
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'e026ee04':
  mpeg4videodec: move sprite_{shift,traj} from MpegEncContext to Mpeg4DecContext
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '513d849b':
  mpeg4videodec: move num_sprite_warping_points from MpegEncContext to Mpeg4DecContext
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '9ba3fc3e':
  mpeg4videodec: move sprite_brightness_change from MpegEncContext to Mpeg4DecContext
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '58c120a9':
  mpeg4videodec: move scalability from MpegEncContext to Mpeg4DecContext
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '6e81597d':
  mpeg4videodec: move enhancement_type from MpegEncContext to Mpeg4DecContext
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '2992afda':
  mpeg4videodec: remove a write-only variable from MpegEncContext
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '3b1c0f68':
  mpeg4videodec: move new_pred from MpegEncContext to Mpeg4DecContext
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'e89247de':
  mpeg4videodec: replace MpegEncContext.reduced_res_vop with a local variable
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '8cebc9ea':
  mpeg4videodec: remove a write-only variable from MpegEncContext
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'b1aacd56':
  mpeg4videodec: move t_frame from MpegEncContext to Mpeg4DecContext
Merged-by: Michael Niedermayer <michaelni@gmx.at>

This simplifies the code
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit '03889074':
  mpeg4videodec: move cplx_estimation_* fields from MpegEncContext to Mpeg4DecContext

Conflicts:
	libavcodec/mpeg4videodec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

This fixes the code after the variables have been moved into the
mpeg4 decoder.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit '43af264d':
  mpeg4videodec: move mpeg4-specific bug workaround variables from MpegEncContext to Mpeg4DecContext

Conflicts:
	libavcodec/mpeg4videodec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'e2ceb176':
  mpeg4videodec: move mpeg4-specific post-frame-decode code from h264dec to mpeg4videodec

Conflicts:
	libavcodec/h263dec.c
	libavcodec/mpeg4video.h
	libavcodec/mpeg4videodec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit 'b452d5ae':
  mpeg4videodec: move mpeg4-specific bug detection from h263 generic code to mpeg4

Conflicts:
	libavcodec/h263dec.c

not merged, the header decode function is not the right place
See: 6c9b82b6Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit '48e13940':
  mpeg4videodec: move MpegEncContext.resync_marker into Mpeg4DecContext.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit 'c2f7417e':
  vc1: move MpegEncContext.resync_marker into VC1Context.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'a5a71992':
  mpeg4videoenc: don't set MpegEncContext.resync_marker
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'ad09f525':
  h263dec: remove commented out cruft

Conflicts:
	libavcodec/h263dec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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