* qatar/release/0.5: (21 commits)
  vp6: properly fail on unsupported feature
  vp56: release frames on error
  shorten: Use separate pointers for the allocated memory for decoded samples.
  shorten: check for realloc failure
  h264: check context state before decoding slice data partitions
  oggdec: check memory allocation
  Fix uninitialized reads on malformed ogg files.
  lavf: avoid integer overflow in ff_compute_frame_duration()
  yuv4mpeg: reject unsupported codecs
  tiffenc: Check av_malloc() results.
  mpegaudiodec: fix short_start calculation
  h264: avoid stuck buffer pointer in decode_nal_units
  yuv4mpeg: return proper error codes.
  avidec: return 0, not packet size from read_packet().
  cavsdec: check for changing w/h.
  avidec: use actually read size instead of requested size
  bytestream: add a new set of bytestream functions with overread checking
  avsdec: Set dimensions instead of relying on the demuxer.
  lavfi: avfilter_merge_formats: handle case where inputs are same
  bmpdec: only initialize palette for pal8.
  ...

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