Name: query_realname - get the real name from a player

Syntax:
	string query_realname()

Description:
	The query_realname gets the real name from a player.

Return value:
	If the player has set his real name with chfn, it is returned, else
	0 is returned.

Examples:
	string name;
	name=this_player()->query_realname();

See also: helpdir/chfn