Name: query_host - get the hostname of a player

Syntax:
	string query_host()

Description:
	The query_host call returns the hostname of a player. If the hostname
	couldn't be resolved, the IP-number is returned.

Return value:
	A string containing the hostname/IP-Number of the player

Examples:
	string host;
	host=this_player()->query_host();

See also: lib/country