cleanup to tools/testing/dart

tools/testing/dart/vm_test_suite.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.
 
-library vm_test_config;
+library vm_test_suite;
 
 import 'test_suite.dart';
 
 class VMTestSuite extends CCTestSuite {
   VMTestSuite(Map configuration)
       : super(configuration,
               "vm",
               "run_vm_tests",
               ["runtime/tests/vm/vm.status"],
               testPrefix: 'cc/');
 }