Implement a clientmessage based scheme for makeing sure that all GTK+

Implement a clientmessage based scheme for makeing sure that all GTK+

2005-08-22  Matthias Clasen  <mclasen@redhat.com>

	* gtk/gtkwindow.c (gtk_window_client_event):
	* gtk/gtkicontheme.c (ensure_valid_themes)
	(_gtk_icon_theme_check_reload): Implement a clientmessage based
	scheme for makeing sure that all GTK+ applications notice if an
	icon theme has been updated. This should prevent multiple versions
	of an icon theme cache to be mapped in memory at the same time,
	which can cause excessive memory consumption.  (#313156, Chris
	Lahey)