test rename overhaul: step 6 - isolate tests

tests/isolate/request_reply_test.dart

 // Copyright (c) 2011, 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("RequestReplyTest");
 
 #import("dart:isolate");
-#import('../../../lib/unittest/unittest.dart');
+#import('../../lib/unittest/unittest.dart');
 
 class TestIsolate extends Isolate {
 
   TestIsolate() : super();
 
   void main() {
     this.port.receive((message, SendPort replyTo) {
       replyTo.send(message + 87);
       this.port.close();
     });
@@ skipping 14 matching lines @@
     new TestIsolate().spawn().then(expectAsync1((SendPort port) {
       ReceivePort reply = new ReceivePort();
       port.send(99, reply.toSendPort());
       reply.receive(expectAsync2((message, replyTo) {
         Expect.equals(99 + 87, message);
         reply.close();
       }));
     }));
   });
 }