* First round of AV sync fixes.
   * -r now does the right thing.
   * frame rate and frame sizes now share same abbv. table and you
     can do -r ntsc as well as -s ntsc


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@2035 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b