[FFmpeg-cvslog] Merge commit 'd44bd7fb27d4121512eae0ffce5e48bac25e82dc'

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Fri Jan 10 03:34:31 2014 +0100| [48276731d604bf0bc28d76e9129c5d52e120d778] | committer: Michael Niedermayer

Merge commit 'd44bd7fb27d4121512eae0ffce5e48bac25e82dc'

* commit 'd44bd7fb27d4121512eae0ffce5e48bac25e82dc':
  avfilter: add documentation for needs_writable

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

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=48276731d604bf0bc28d76e9129c5d52e120d778
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