Break out code that was repeated into separate functions and call them

Break out code that was repeated into separate functions and call them

2007-05-28  Richard Hult  <richard@imendio.com>

	* gdk/quartz/gdkevents-quartz.c (get_child_coordinates_from_ancestor)
	(get_ancestor_coordinates_from_child): Break out code that was
	repeated into separate functions and call them instead.
	(find_window_for_mouse_nsevent): Break out this from
	find_window_for_nsevent to make the code clearer.
	(find_window_for_nsevent): Use the above and fix the returned
	coordinates in the process so that they are always relative the
	found window, both for the normal case and during grabs. Still
	needs fixing for the case where we get nsevents for a window other
	than than grab window during grabs.

svn path=/trunk/; revision=17971