Implement HMAC support in lib/crypto.

tools/test.dart

 #!/usr/bin/env dart
 // Copyright (c) 2012, 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 file is the entrypoint of the dart test suite.  This suite is used
  * to test:
  *
  *     1. the dart vm
@@ skipping 38 matching lines @@
   'frog/tests/frog_native',
   'frog/tests/leg',
   'frog/tests/leg_only',
   'tests/benchmark_smoke',
   'tests/corelib',
   'tests/dom',
   'tests/html',
   'tests/isolate',
   'tests/json',
   'tests/language',
+  'tests/lib',
   'tests/utils',
   'utils/tests/css',
   'utils/tests/peg',
   'utils/tests/pub',
 ];
 
 main() {
   var startTime = new Date.now();
   var optionsParser = new TestOptionsParser();
   List<Map> configurations = optionsParser.parse(new Options().arguments);
@@ skipping 63 matching lines @@
   // Start process queue.
   var queue = new ProcessQueue(maxProcesses,
                                progressIndicator,
                                startTime,
                                printTiming,
                                enqueueConfiguration,
                                verbose,
                                listTests,
                                keepGeneratedTests);
 }