MacGui: removed some attributes from the xib that might building on 10.8 .

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@6380 b64f7644-9d1e-0410-96f1-a4d463321fa5
MacGui: set the NSOnState on the selected preset menu item.

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@6381 b64f7644-9d1e-0410-96f1-a4d463321fa5
MacGui: use the menu item tag to select the item of the format popup button.

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@6382 b64f7644-9d1e-0410-96f1-a4d463321fa5