These hopefully-innocuous changes to hb.c should help with the active queuing in...

These hopefully-innocuous changes to hb.c should help with the active queuing in the MacGui. Adds a new counter variable, h->job_count_permanent, so the task list readout ("Encoding job x of y") stays correct even if the user adds or removes items on the jobs list during an encode. Seems to work ok for me and Dynaflash, but who knows? This might need to be reverted, and/or maybe someone can come up with a less hackish way of doing it.

git-svn-id: svn://localhost/HandBrake/trunk@719 b64f7644-9d1e-0410-96f1-a4d463321fa5