Reverts an hb_snooze call's length from 200 to 50, like titer intended it. Should...

Reverts an hb_snooze call's length from 200 to 50, like titer intended it. Should be slightly faster (maybe 1 fps), hopefully might fix some other random problems. It's located in the part of muxcommon.c that waits til the audio and video buffers are full before muxing packets. If the buffers aren't full, it snoozes. So I think it gets run 1 or more times for every frame. The snooze value got altered back in revision 98.

git-svn-id: svn://localhost/HandBrake/trunk@437 b64f7644-9d1e-0410-96f1-a4d463321fa5