- nasty bug: at eof, dropping a delay queue frame for CFR could link the render...

 - nasty bug: at eof, dropping a delay queue frame for CFR could link the render video output to the free list causing hangs and/or garbage output.
 - since frame rate conversion moved from sync to render, sync has to use input (title) frame rate, not output (job) frame rate.
 - get rid of 'too many frames' check in sync. it can't be done here because it causes reader to deadlock and it belongs in the dvd reader anyway (only dvd input can loop).

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@2496 b64f7644-9d1e-0410-96f1-a4d463321fa5