Name: check_killable - check if an enemy is killable by a living

Syntax:
	int check_killable(object target)

Description:
	The check_killable function checks if another living is killable by
	this living. Players that don't have the killable flag set (see
	make_killable) can't be killed by other players.

Return value:
	1, if the target is killable by the living, 0 if not.

Examples:
	this_player()->check_killable(query_attack());

See also: player/query_killable