* qatar/release/0.8:
  Update Changelog for the 0.8.3 Release
  Prepare for 0.8.3 Release
  ea: check chunk_size for validity.
  png: check bit depth for PAL8/Y400A pixel formats.
  qdm2: clip array indices returned by qdm2_get_vlc().
  tqi: Pass errors from the MB decoder
  h264: Add check for invalid chroma_format_idc
  h263dec: Disallow width/height changing with frame threads.

Conflicts:
	Changelog
	RELEASE
	libavcodec/eatqi.c
	libavcodec/h264_ps.c
	libavcodec/pngdec.c

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