Lfun:	notify_item_enter - notify if an item has entered a container

Synopsis:
	notify_item_enter(object item)

Description:
	The notify_item_enter function is called in a container after an
	item has entered it, for example if a player put it in.

Return value: none

Examples:
	object last_item;
	notify_item_enter(item) {
		last_item=item;
	}

See also: object/notify_item_leave, object/forbid_item_enter, object/forbid_item_leave, object/notify_enter_container, object/notify_leave_container, object/forbid_enter_container, object/forbid_leave_container, object/drop, object/get, efun/move_object, efun/transfer