Merge remote-tracking branch 'qatar/master'

Merge remote-tracking branch 'qatar/master'

* qatar/master: (53 commits)
  probe: Restore identification of files with very large id3 tags and no extension.
  probe: Remove id3 tag presence as a criteria to do file extension checking.
  mpegts: MP4 SL support
  mpegts: MP4 OD support
  mpegts: Add support for Sections in PMT
  mpegts: Replace the MP4 descriptor parser with a recursive parser.
  mpegts: Add support for multiple mp4 descriptors
  mpegts: Parse mpeg2 SL descriptors.
  isom: Add MPEG4SYSTEMS dummy object type indication.
  aacdec: allow output reconfiguration on channel changes
  nellymoserenc: take float input samples instead of int16
  nellymoserdec: use dsp functions for overlap and windowing
  nellymoserdec: do not fail if there is extra data in the packet
  nellymoserdec: fail if output buffer is too small
  nellymoserdec: remove pointless buffer size check.
  lavf: add init_put_byte() to the list of visible symbols.
  seek-test: free options dictionary after use
  snow: do not draw_edge if emu_edge is set
  tools/pktdumper: update to recent avformat api
  seek-test: update to recent avformat api
  ...

Conflicts:
	doc/APIchanges
	libavcodec/mpegaudiodec.c
	libavcodec/nellymoserdec.c
	libavcodec/snow.c
	libavcodec/version.h
	libavcodec/wmadec.c
	libavformat/avformat.h
	libavformat/mpegts.c
	libavformat/mxfdec.c
	libavformat/utils.c
	libavformat/wtv.c

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