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

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Fri Mar 22 12:52:05 2013 +0100| [abbc34c372dbe8a486bfd5689b394b0af3835ef5] | committer: Michael Niedermayer

Merge remote-tracking branch 'qatar/master'

* qatar/master:
  configure: Enable hwaccels without external dependencies by default.
  doc/developer: Clarify symbol naming prefixes section.

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

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=abbc34c372dbe8a486bfd5689b394b0af3835ef5
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