Moved docgen out of the sdk into pkg/

pkg/docgen/example/test.dart

+// 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.
+
 /**
  * This library is used solely for testing during development and is not
  * intended to be run by the testing machines.
  */
 // TODO(tmandel): Remove this file once docgen is ready for more clear tests.
 library DummyLibrary;
 
 import 'dart:json';
 import 'dart:math';
 
@@ skipping 36 matching lines @@
 }
 
 main() {
   A a = new A();
   print(a.someNumber);
 }
 
 A getA(int testInt, [String testString="default"]) {
   return new A();
 }