(svn r15027) -Merge: tomatos and bananas left to be, here is NoAI for all to see.

NoAI is an API (a framework) to build your own AIs in. See:
   http://wiki.openttd.org/wiki/index.php/AI:Main_Page
 With many thanks to:
  - glx and Rubidium for their syncing, feedback and hard work
  - Yexo for his feedback, patches, and AIs which tested the system very deep
  - Morloth for his feedback and patches
  - TJIP for hosting a challenge which kept NoAI on track
  - All AI authors for testing our AI API, and all other people who helped in one way or another
-Remove: all old AIs and their cheats/hacks

src/ai/api/ai_enginelist.hpp

@@ -0,0 +1,25 @@
+/* $Id$ */
+
+/** @file ai_enginelist.hpp List all the engines. */
+
+#ifndef AI_ENGINELIST_HPP
+#define AI_ENGINELIST_HPP
+
+#include "ai_abstractlist.hpp"
+#include "ai_vehicle.hpp"
+
+/**
+ * Create a list of engines based on a vehicle type.
+ * @ingroup AIList
+ */
+class AIEngineList : public AIAbstractList {
+public:
+	static const char *GetClassName() { return "AIEngineList"; }
+
+	/**
+	 * @param vehicle_type The type of vehicle to make a list of engines for.
+	 */
+	AIEngineList(AIVehicle::VehicleType vehicle_type);
+};
+
+#endif /* AI_ENGINELIST_HPP */