ClonesProductionUnits:

string[] CloneableTypes	checks Cloneable.Types

Cloneable:
	string[] Types checked by ClonesProductionUnits.CloneableTypes

Added INotifyOtherProduction
	for notifying self when another actor
	produces a unit.

OpenRA.Mods.RA/Cloneable.cs

@@ -0,0 +1,24 @@
+ #region Copyright & License Information
+ /*
+  * Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
+  * This file is part of OpenRA, which is free software. It is made
+  * available to you under the terms of the GNU General Public License
+  * as published by the Free Software Foundation. For more information,
+  * see COPYING.
+  */
+ #endregion
+
+using System;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA
+{
+	[Desc("Actors with the \"ClonesProducedUnits\" trait will produce a free duplicate of me.")]
+	public class CloneableInfo : TraitInfo<Cloneable>
+	{
+		[Desc("This unit's cloneable type is:")]
+		public readonly string[] Types = { };
+	}
+
+	public class Cloneable { }
+}