Fix vm code base so that it can be built for --arch=simarm (no snapshot yet).

runtime/vm/allocation.h

Index: runtime/vm/allocation.h
===================================================================
--- runtime/vm/allocation.h	(revision 17245)
+++ runtime/vm/allocation.h	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -25,8 +25,7 @@
 
  private:
   DISALLOW_ALLOCATION();
-  // TODO(5411081): Add DISALLOW_COPY_AND_ASSIGN(ValueObject) once the mac
-  // build issue is resolved.
+  DISALLOW_COPY_AND_ASSIGN(ValueObject);
 };