Added pref migration for prompt on close. Added code for jobs tableview. Tweaked prompt on close global prefs. Prmopt on quit logic improved, message improved, that code refactored.

Initial add. May have broken some profile prefs, bulk copy. Need to implement tableview delegate, plus, minus buttons. Need to remove confirmation button from general prefs. Need to add migration code.

Can be set using:
$ echo -e -n "\033]50;CurrentDir=/Path/To/Directory\007"

Fix bug where window arrangements were incompatible with custom prefs dir. Improve wording of initial alert w/ custom prefs. Add alert when quitting when there are custom prefs and you've changed something

found a resource leak in PTYTextArea trackingRects.

With long periods of usage, iTerm2 windows slow down while switching tabs.
All of this time, apparently, was being spent in _CGSRemoveTrackingArea().

Instrumenting calls to {add,remove}TrackingRect showed unbalanced allocation caused by -[PTYTextView refresh] being called on tabs after they were removed from view.
This "phantom refresh tracking rect" was then dropped/forgotten when the tab came back into view during viewDidMoveToWindow, which did not verify there was not already a tracking rect.
While there may actually be a more underlying bug with "phantom refresh", this patch should solve the resource/speed leak by guaranteeing we never allocate an extra tracking rect.

When you create a new window while already in lion fullscreen mode, ignore the zoom-vertically-only setting. Fixes bug 1312.

Make URL support for loading prefs explicit in ui. Improve error message on failed URL prefs load. Fix URL prefs loading.