Replace UnitTraitOrderTargeter with TargetTypeOrderTargeter.

This also makes naval buildings untargetable for c4 and demo trucks, as they don't make much sense.

OpenRA.Mods.RA/DemoTruck.cs

@@ -34,7 +34,7 @@ namespace OpenRA.Mods.RA
 		{
 			get
 			{
-				yield return new UnitTraitOrderTargeter<Building>("DemoAttack", 5, "attack", true, false) { ForceAttack = false };
+				yield return new TargetTypeOrderTargeter("DemoTruck", "DemoAttack", 5, "attack", true, false) { ForceAttack = false };
 				yield return new DeployOrderTargeter("DemoDeploy", 5);
 			}
 		}