[FFmpeg-cvslog] Merge remote-tracking branch 'cus/stable'

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Sun Oct 21 18:56:50 2012 +0200| [747a00b688d74f3187e9c4dc21fe1b0ce2b63064] | committer: Michael Niedermayer

Merge remote-tracking branch 'cus/stable'

* cus/stable:
  ffplay: if there is no audio stream, use external clock by default
  ffplay: use get_master_sync_type where necessary
  ffplay: add get_master_sync_type function
  ffplay: only check external clock if current frame serial matches the displayed frame serial
  ffplay: add serial field to PacketQueue entry and populate it
  ffplay: fix external time sync mode
  ffplay: initialize audio and video pts drift
  ffplay: fix nosync threshold check in synchronize_audio
  ffplay: use framedrop by default when sync is not done to video

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

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=747a00b688d74f3187e9c4dc21fe1b0ce2b63064
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