[FFmpeg-cvslog] Merge remote-tracking branch 'qatar/master'

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Mon Jan  9 00:32:38 2012 +0100| [9273efac1b9ef79ca0ea5673d8088c501e19d70f] | committer: Michael Niedermayer

Merge remote-tracking branch 'qatar/master'

* qatar/master:
  bfi: Use bytestream2 functions to prevent buffer overreads.
  dpcm: Fix invalid writes
  utvideo: frame multithreading.
  vorbis: An additional defense in the Vorbis codec.
  vorbisdec: Fix decoding bug with channel handling

Conflicts:
	libavcodec/dpcm.c

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

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=9273efac1b9ef79ca0ea5673d8088c501e19d70f
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