Rename the package to "test".

lib/src/backend/metadata.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 unittest.backend.metadata;
+library test.backend.metadata;
 
 import 'platform_selector.dart';
 
 /// Metadata for a test or test suite.
 ///
 /// This metadata comes from declarations on the test itself; it doesn't include
 /// configuration from the user.
 class Metadata {
   /// The selector indicating which platforms the suite supports.
   final PlatformSelector testOn;
@@ skipping 20 matching lines @@
   /// If the two [Metadata]s have conflicting properties, [other] wins.
   Metadata merge(Metadata other) =>
       new Metadata(testOn: testOn.intersect(other.testOn));
 
   /// Serializes [this] into a JSON-safe object that can be deserialized using
   /// [new Metadata.deserialize].
   serialize() => {
     'testOn': testOn == PlatformSelector.all ? null : testOn.toString()
   };
 }