Roll Observatory packages and add a roll script

packages/initialize/test/initializer_cycle_error_test.dart

+// Copyright (c) 2015, 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 initialize.initializer_cycle_error_test;
+
+import 'cycle_a.dart'; // Causes a cycle.
+import 'package:initialize/initialize.dart';
+import 'package:unittest/unittest.dart';
+import 'package:unittest/compact_vm_config.dart';
+
+main() {
+  useCompactVMConfiguration();
+
+  test('super class cycles are not supported', () {
+    expect(run, throwsUnsupportedError);
+  });
+}