Update unittest to new package layout.

tests/html/typed_arrays_2_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('TypedArrays2Test');
-#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('fromBufferTest_dynamic', () {
       var a1 = new Uint8Array(1024);
       for (int i = 0; i < a1.length; i++) {
         a1[i] = i; // 0,1,2,...,254,255,0,1,2,...
       }
@@ skipping 51 matching lines @@
       Expect.equals(0xCFCECDCC, a2[1]);
       Expect.equals(0x03020100, a2[14]);
 
       a2 = new Uint32Array.fromBuffer(a1.buffer, length: 30, byteOffset: 456);
       Expect.equals(30, a2.length);
       Expect.equals(0xCBCAC9C8, a2[0]);
       Expect.equals(0xCFCECDCC, a2[1]);
       Expect.equals(0x03020100, a2[14]);
   });
 }