* src/file-manager/fm-list-view.c:
	(fm_list_view_file_changed): Only call nautilus_file_unref if
	the file isn't gone. This cures some GTK-CRITICALS I ran into.

	* src/file-manager/fm-properties-window.c:
	(name_field_update): Renamed to name_field_update_to_match_file;
	handle case where file name was changed elsewhere.
	(create_properties_window): Hook up name_field_update_to_match_file
	to get called when file changes externally.
	(remove_properties_window_from_hash_table): New function.
	(fm_properties_window_get_or_create): Use hash table so there's
	only one Properties window per file. This was intended to be the
	design but we forgot to implement it earlier.