Roll Observatory packages and add a roll script

packages/analyzer/test/test_all.dart

Index: packages/analyzer/test/test_all.dart
diff --git a/packages/analyzer/test/test_all.dart b/packages/analyzer/test/test_all.dart
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index 0000000000000000000000000000000000000000..c21cc3f8df118e3d2425bd407638be865988905f
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+++ b/packages/analyzer/test/test_all.dart
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+// 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.engine;
+
+import 'package:unittest/unittest.dart';
+
+import 'cancelable_future_test.dart' as cancelable_future_test;
+import 'enum_test.dart' as enum_test;
+import 'file_system/test_all.dart' as file_system;
+import 'generated/test_all.dart' as generated;
+import 'instrumentation/test_all.dart' as instrumentation;
+import 'parse_compilation_unit_test.dart' as parse_compilation_unit;
+import 'source/test_all.dart' as source;
+import 'src/test_all.dart' as src;
+import 'utils.dart';
+
+/// Utility for manually running all tests.
+main() {
+  initializeTestEnvironment();
+  group('analysis engine', () {
+    cancelable_future_test.main();
+    enum_test.main();
+    file_system.main();
+    generated.main();
+    instrumentation.main();
+    parse_compilation_unit.main();
+    source.main();
+    src.main();
+  });
+}