buffersink is enabled unconditionally.

They are no longer needed since there is no incompatible
ABI version.

Reduce the diff with the fork.

* commit '7d42fd6b':
  lavc: remove disabled FF_API_FIND_BEST_PIX_FMT cruft

Conflicts:
	libavcodec/avcodec.h
	libavcodec/imgconvert.c
	libavcodec/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

This way, the special IDCT permutations are no longer needed. Bfin code
is disabled until someone updates it. This is similar to how H264 does
it, and removes the dsputil dependency imposed by the scantable code.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit '84501710':
  lavc: remove disabled FF_API_DSP_MASK cruft
  lavc: remove disabled FF_API_SUB_ID cruft

Conflicts:
	libavcodec/options_table.h
	libavcodec/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '2a113695':
  lavc: remove disabled FF_API_INTER_THRESHOLD cruft
  lavc: remove disabled FF_API_COLOR_TABLE_ID cruft
  lavc: remove disabled FF_API_MPV_GLOBAL_OPTS cruft

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

* commit '0f24a3ca':
  lavc: remove disabled FF_API_OLD_ENCODE_VIDEO cruft
  lavc: remove disabled FF_API_OLD_ENCODE_AUDIO cruft
  lavc: remove disabled FF_API_OLD_DECODE_AUDIO cruft

Conflicts:
	libavcodec/flacenc.c
	libavcodec/libgsm.c
	libavcodec/utils.c
	libavcodec/version.h

The compatibility wrapers are left as they likely sre still
in wide use. They will be removed when they break or otherwise
cause work without an volunteer being available.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

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

* commit '6327c107':
  atomic: fix CAS with armcc.
  png: use av_mallocz_array() for the zlib zalloc function
  libmp3lame: use the correct remaining buffer size when flushing
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '666fe5da':
  atomic: Exclude the unsupported implementation headers from checkheaders
  avconv: do not silently ignore unused codec AVOptions.

Conflicts:
	ffmpeg_opt.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit 'db2d65ce':
  avconv: fix a typo
  FATE: replace -vb with -b:v
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '6deae8e0':
  FATE: remove the -dct option from some decoding tests.
  avconv: use a local variable for InputFile in open_input_file().

Conflicts:
	tests/fate/microsoft.mak
	tests/fate/real.mak
	tests/fate/video.mak
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '1da54e90':
  avconv: use a local variable for OutputFile in open_output_file().
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

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

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

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

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

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

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

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

* commit '9d3009c6':
  avconv: print an error on applying options of the wrong type.
  atomic: Check for __sync_val_compare_and_swap instead of __sync_synchronize
  output-example: Update to use encode_video2 instead of the now dropped encode_video

Conflicts:
	doc/examples/muxing.c
	ffmpeg_opt.c
	libavutil/atomic.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

The current code returned a period=0, resulting in identical pts for all frames
after time-filtering. This is because AV_TIME_BASE_Q={1, AV_TIME_BASE} and
not {AV_TIME_BASE, 1}. With this patch the correct period in microseconds is computed.

* commit '2240e92f':
  atomic: Add include guards to the implementation headers
  lavc: update the fallback versions of ff_thread_*

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

* commit '19dd4017':
  libopencore-amr: Add the missing 3rd argument of ff_get_buffer()
  vmdaudio: fix invalid reads when packet size is not a multiple of chunk size
  wmaprodec: return an error, not 0, when the input is too small.

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

* commit 'cacad1c0':
  wmaprodec: require block_align to be set.
  wmadec: require block_align to be set.
  ivi_common: do not call MC for intra frames when dc_transform is unset

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

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

* commit '3e2f2002':
  roqvideodec: fix a potential infinite loop in roqvideo_decode_frame().
  xxan: fix invalid memory access in xan_decode_frame_type0()
  tty: set avg_frame_rate.
  FATE: enable multiple slices in the ffv1 vsynth test
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'd2438969':
  ffv1: fix calculating slice dimensions for version 2

Conflicts:
	libavcodec/ffv1dec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '7b89cd20':
  eamad: allocate a dummy reference frame when the real one is missing
  Replace remaining includes of audioconvert.h with channel_layout.h
  Replace some forgotten instances of PIX_FMT_* with AV_PIX_FMT_*.

Conflicts:
	libavcodec/h264.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'd8b31be6':
  Add the bumps and APIchanges entries for reference counted buffers changes.

Conflicts:
	Changelog
	doc/APIchanges
	libavcodec/version.h
	libavdevice/version.h
	libavfilter/version.h
	libavformat/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

This field is used and nothing equivalent exists
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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