Move unittest tests underneath it in /pkg

tests/lib/unittest/mock_regexp_negative_test.dart

Index: tests/lib/unittest/mock_regexp_negative_test.dart
===================================================================
--- tests/lib/unittest/mock_regexp_negative_test.dart	(revision 10689)
+++ tests/lib/unittest/mock_regexp_negative_test.dart	(working copy)
@@ -1,15 +0,0 @@
-// 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.
-
-#library('unittestTest');
-#import('../../../pkg/unittest/unittest.dart');
-
-main() {
-  test('Mocking: RegExp CallMatcher bad', () {
-    var m = new Mock();           
-    m.when(callsTo(matches('^[A-Z]'))).          
-           alwaysThrow('Method names must start with lower case.');      
-    m.Test();         
-  });
-}