Revert "Parts must start with 'part of'" and "Attempt to fix VM build"

dart/compiler/javatests/com/google/dart/compiler/end2end/inc/myother2.change.dart

 // Copyright (c) 2011, 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.
-part of myApp;
 
 class IntBag {
   int contents;
 }
 
 class Other2 {
   IntBag hole, not_hole;
   void methodHole() { }
 
   Other2() { }
 }