Lfun:	init_arg - initializise auto-loading objects

Synopsis:
	init_arg(string arg)

Description:
	This function is called at login of a user in every auto-loading
	object the user had in his inventory when he logged off. It is used
	for setting values in that object stored by query_auto_load.

	Not all MUDs allow you to write auto-load objects. In that case your
	object will not be recreated even though you defined a query_auto_load()
	and an init_arg() function.

Return value: none

Examples:
	See the query_auto_load example:

	string info;
	init_arg(str) {
		info=str;
	}

	If you want to restore several values, you have to extract them using
	sscanf.

See also: object/query_auto_load, efun/sscanf