Update unittest to new package layout.

tests/html/typed_arrays_1_test.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.
 
 #library('TypedArrays1Test');
-#import('../../pkg/unittest/unittest.dart');
-#import('../../pkg/unittest/html_config.dart');
+#import('../../pkg/unittest/lib/unittest.dart');
+#import('../../pkg/unittest/lib/html_config.dart');
 #import('dart:html');
 
 main() {
   useHtmlConfiguration();
 
   test('createByLengthTest', () {
       var a = new Float32Array(10);
       Expect.equals(10, a.length);
       Expect.equals(0, a[4]);
   });
@@ skipping 18 matching lines @@
 
   });
 
   test('typeTests', () {
       var a = new Float32Array(10);
       Expect.isTrue(a is List);
       Expect.isTrue(a is List<num>);
       Expect.isTrue(a is! List<String>);
     });
 }