Implement type hints and use them to determine which windows should be

Implement type hints and use them to determine which windows should be

2006-07-19  Richard Hult  <richard@imendio.com>

	* gdk/quartz/gdkwindow-quartz.c (gdk_window_impl_quartz_init)
	(gdk_window_set_type_hint, gdk_window_get_type_hint):
	* gdk/quartz/GdkQuartzWindow.c
	([GdkQuartzWindow -canBecomeMainWindow])
	([GdkQuartzWindow -canBecomeKeyWindow]): Implement type hints and
	use them to determine which windows should be allowed to become
	main and key windows.