Merge commit '0b5a26e8bcd219efe5da3a6d39b588fabf91f2b9'

Merge commit '0b5a26e8bcd219efe5da3a6d39b588fabf91f2b9'

* commit '0b5a26e8bcd219efe5da3a6d39b588fabf91f2b9': (35 commits)
  qdm2: Convert to the new bitstream reader
  qcelp: Convert to the new bitstream reader
  pcx: Convert to the new bitstream reader
  opus: Convert to the new bitstream reader
  nellymoser: Convert to the new bitstream reader
  jvdec: Convert to the new bitstream reader
  hqx: Convert to the new bitstream header
  hq_hqa: Convert to the new bitstream reader
  gsm: Convert to the new bitstream reader
  g72x: Convert to the new bitstream reader
  g2meet: Convert to the new bitstream reader
  fraps: Convert to the new bitstream reader
  flashsv: Convert to the new bitstream reader
  faxcompr: Convert to the new bitstream reader
  exr: Convert to the new bitstream reader
  escape130: Convert to the new bitstream reader
  escape124: Convert to the new bitstream reader
  dvdsubdec: Convert to the new bitstream reader
  dss_sp: Convert to the new bitstream reader
  cook: Convert to the new bitstream reader
  ...

This merge is a noop, see
http://ffmpeg.org/pipermail/ffmpeg-devel/2017-April/209609.html

Merged-by: Clément Bœsch <u@pkh.me>