(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_list.cpp

@@ -0,0 +1,45 @@
+/* $Id$ */
+
+/** @file ai_list.cpp Implementation of AIList. */
+
+#include <squirrel.h>
+#include "ai_list.hpp"
+
+void AIList::AddItem(int32 item, int32 value)
+{
+	AIAbstractList::AddItem(item);
+	this->SetValue(item, value);
+}
+
+void AIList::ChangeItem(int32 item, int32 value)
+{
+	this->SetValue(item, value);
+}
+
+void AIList::RemoveItem(int32 item)
+{
+	AIAbstractList::RemoveItem(item);
+}
+
+SQInteger AIList::_set(HSQUIRRELVM vm) {
+	if (sq_gettype(vm, 2) != OT_INTEGER) return SQ_ERROR;
+	if (sq_gettype(vm, 3) != OT_INTEGER || sq_gettype(vm, 3) == OT_NULL) {
+		return sq_throwerror(vm, _SC("you can only assign integers to this list"));
+	}
+
+	SQInteger idx, val;
+	sq_getinteger(vm, 2, &idx);
+	if (sq_gettype(vm, 3) == OT_NULL) {
+		this->RemoveItem(idx);
+		return 0;
+	}
+
+	sq_getinteger(vm, 3, &val);
+	if (!this->HasItem(idx)) {
+		this->AddItem(idx, val);
+		return 0;
+	}
+
+	this->ChangeItem(idx, val);
+	return 0;
+}