related issues.

	* libnautilus-extensions/nautilus-directory-async.c:
	(metafile_read_done): Call emit_metadata_changed so
	change-watchers will know that new metadata is available.
	(set_up_request_by_file_attributes): Added FIXME comment
	about confusion between file attributes and metadata.
	(is_anyone_waiting_for_metafile): Made it check monitor_list
	as well as call_when_ready_list.

	* libnautilus-extensions/nautilus-icon-factory.h,
	* libnautilus-extensions/nautilus-icon-factory.c:
	(nautilus_icon_factory_get_required_file_attributes):
	New function, returns the list of file attributes needed
	to get the right icon for a file.
	(nautilus_icon_factory_is_icon_ready_for_file): Rewrote
	to call this new function.

	* src/nautilus-bookmark-list.c:
	(bookmark_in_list_changed_callback), (stop_monitoring_bookmark),
	(stop_monitoring_one), (insert_bookmark_internal),
	(nautilus_bookmark_list_append),
	(nautilus_bookmark_list_delete_item_at),
	(nautilus_bookmark_list_delete_items_with_uri),
	(nautilus_bookmark_list_insert_item),
	(nautilus_bookmark_list_load_file): Made bookmark list monitor
	the "changed" signal of all its bookmarks, so it knows to save
	new improved icons or names to disk.
	* src/nautilus-sidebar-title.c:
	(nautilus_sidebar_title_set_uri): add file monitor in all cases,
	not just if it's a directory; monitor the attributes needed for
	getting an icon too. This fixes a bug where a custom icon on the
	user's home directory wouldn't appear in the sidebar.
	(release_file): remove file monitor in all cases.