Merge commit 'bd6496fa'

* commit 'bd6496fa':
  interplayvideo: Convert to the new bitstream reader
  adx: Convert to the new bitstream reader
  dvbsubdec: Convert to the new bitstream reader
  motionpixels: Convert to the new bitstream reader

This merge is a noop, see
http://ffmpeg.org/pipermail/ffmpeg-devel/2017-April/209609.htmlMerged-by: Clément Bœsch <u@pkh.me>