* Many files:
	Simplified calls to bonobo_object_ref/unref.

	* components/history/nautilus-history-view.c: (update_history):
	Fixed so that a history update while one is already in progress
	will work properly.

	* libnautilus/nautilus-view.c:
	(remove_listener): New.
	(update_listener): Renamed from nautilus_view_set_frame, made it
	handle various cases better. Fixed leak of property bag.
	(forget_cached_view_frame): New.
	(nautilus_view_set_frame_callback): Use new forget_cached_view_frame
	and update_listener.
	(nautilus_view_construct_from_bonobo_control): Use
	g_signal_connect_object.  Not sure if this is better, since they
	are part of the same aggregate.
	(nautilus_view_finalize): Use new forget_cached_view_frame and
	remove_listener.
	(nautilus_view_dispose): Use new forget_cached_view_frame and
	remove_listener.
	(nautilus_view_get_view_frame): Fixed leak of control frame.
	(nautilus_view_set_listener_mask): Simplified, and made it work even
	if you call it multiple times, by calling new update_listener.

	* libnautilus-private/nautilus-icon-canvas-item.c:
	(create_label_layout): Handle NULL font_name case just in case.
	* libnautilus-private/nautilus-icon-container.c:
	(nautilus_icon_container_set_zoom_level): Use
	invalidate_label_sizes instead of setting update_icon_font.
	(nautilus_icon_container_set_font_name): Do nothing if font name
	doesn't change. If it does, use invalidate_label_sizes rather than
	setting update_icon_font.
	(nautilus_icon_container_set_font_size_table): Only redraw if font
	size changes. Also, use invalidate_label_sizes rather than setting
	update_icon_font.

	* libnautilus-private/nautilus-directory.c:
	(add_preferences_callbacks):
	* libnautilus-private/nautilus-icon-factory.c: (get_icon_factory):
	Initialize global preferences as needed.

	* src/file-manager/fm-icon-view.c: (fm_icon_view_finalize):
	* src/file-manager/fm-search-list-view.c: (real_destroy):
	* src/nautilus-application.c: (nautilus_application_destroy),
	(nautilus_application_create_window),
	(nautilus_application_class_init):
	* src/nautilus-main.c: (main):

	* src/nautilus-view-frame.c: (create_corba_objects): Fix property
	bag leak.