Add utilities for creating SourceChanges

pkg/analysis_server/test/src/test_all.dart

 // Copyright (c) 2014, 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 test.task;
+library test.src;
 
 import 'package:unittest/unittest.dart';
 
-import 'task_dart_test.dart' as task_dart_test;
+import 'utilities/test_all.dart' as utilities_all;
 
-/// Utility for manually running all tests.
+/**
+ * Utility for manually running all tests.
+ */
 main() {
   groupSep = ' | ';
-  group('generated tests', () {
-    task_dart_test.main();
+  group('analysis_server', () {
+    utilities_all.main();
   });
 }