2006-01-30  Elijah Newren  <newren gmail com>

	* src/display.[ch] (struct MetaDisplay), meta_display_open,
	meta_display_set_input_focus_window,
	meta_display_focus_the_no_focus_window): Track the active_screen,
	(event_callback): If the mouse enters a window on a different
	screen, activate the default window on the new screen.  May need
	to be modified for click-to-focus; we'll wait for feedback.  Fixes
	#319348.