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

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Wed May  1 18:33:30 2013 +0200| [67731ef40f9f86ca870ae4c5dbbe01ead8dba962] | committer: Michael Niedermayer

Merge remote-tracking branch 'qatar/master'

* qatar/master:
  avutil: doxy: Small clarification for av_buffer_create()
  avcodec: doxy: Clarify how to use buf[] when implementing get_buffer2()
  avcodec: doxy: Clarify what get_buffer2 must fill in buf[]

Conflicts:
	libavutil/buffer.h

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

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=67731ef40f9f86ca870ae4c5dbbe01ead8dba962
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