Merge remote-tracking branch 'qatar/master'

* qatar/master:
  mpegenc: use avctx->slices as number of slices
  v410enc: fix undefined signed left shift caused by integer promotion
  Release notes: mention cleaned up header includes
  fix Changelog file
  Fix a bunch of typos.
  Drop some pointless void* return value casts from av_malloc() invocations.
  wavpack: fix typos in previous cosmetic clean-up commit
  wavpack: cosmetics: K&R pretty-printing
  avconv: remove the 'codec framerate is different from stream' warning
  wavpack: determine sample_fmt before requesting a buffer
  bmv audio: implement new audio decoding API
  mpegaudiodec: skip all channels when skipping granules
  mpegenc: simplify muxrate calculation

Conflicts:
	Changelog
	avconv.c
	doc/RELEASE_NOTES
	libavcodec/h264.c
	libavcodec/mpeg12.c
	libavcodec/mpegaudiodec.c
	libavcodec/mpegvideo.c
	libavformat/mpegenc.c

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