Name: compute_values - recursively compute the value of all items in player

Syntax:
	int compute_values(object player)

Description:
	The compute_values function recursively computes the value of all
	items a player is carrying. This call is mainly used by the save
	command.

Return value:
	The value of all items a player is carrying, added up.

Examples:
	int value;
	value=this_player()->compute_values(this_player());
	
See also: helpdir/save, player/save_me