2003-12-13  Rob Adams  <readams@readams.net>

	Add increased robustness for dealing with all workspaces windows
	and MRU lists.
	Also add very preliminary _NET_WM_USER_TIME
	support, limited to simply listening for the property and keeping
	an internal variable updated, and also treating some input events
	as though they were user time updates.

	* src/window.c (meta_window_new_with_attrs): set on_all_workspaces
	in all cases _before_ adding to the workspaces, so that windows
	initially on all workspaces are added correctly to the MRU lists.
	Fix for #120907.
	(process_property_notify): add net_wm_user_time support.

	* src/workspace.c (meta_workspace_add_window): handle sticky
	windows so that we add to add mru lists if needed
	(meta_workspace_remove_window): handle sticky windows so that they
	are removed from all mru lists if needed.

	* src/display.[ch] (meta_display_open): add net_wm_user_time support.
	(event_callback): simulate user time update on key and button presses.

	* src/screen.c (set_supported_hint): add net_wm_user_time support.

	* src/window-props.c (init_net_wm_user_time): new function for
	user_time support
	(reload_net_wm_user_time): new function for user_time support
	(meta_display_init_window_prop_hooks): add hook for user_time