Merge commit '1202b712'

* commit '1202b712':
  theora: export cropping information instead of handling it internally
  h264dec: export cropping information instead of handling it internally
  h264dec: be more explicit in handling container cropping
  hevcdec: export cropping information instead of handling it internally

This commit is a noop.

This changes the cropping behavior, when it's supposedly only meant to move
it outside of the decoder.
See https://ffmpeg.org/pipermail/ffmpeg-devel/2017-May/211239.html for the
discussion about it.
Merged-by: James Almer <jamrial@gmail.com>