Set the shortcuts tree as a drag destination.

Set the shortcuts tree as a drag destination.

2003-12-01  Federico Mena Quintero  <federico@ximian.com>

	* gtk/gtkfilechooserdefault.c (create_shortcuts_tree): Set the
	shortcuts tree as a drag destination.
	(shortcuts_drag_data_received_cb): New callback.
	(get_file_info): Also fetch information on whether the file is a folder.
	(add_bookmark_button_clicked_cb): Use error_could_not_add_bookmark_dialog().
	(error_could_not_add_bookmark_dialog): New function.
	(shortcuts_add_bookmark_from_path): New helper function.
	(add_bookmark_button_clicked_cb): Use shortcuts_add_bookmark_from_path().
	(shortcuts_row_activated): We no longer need the changing_folder flag.
	(struct _GtkFileChooserDefault): Likewise.