test rename overhaul: step 6 - isolate tests

tests/isolate/nested_spawn2_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.
 
 // Dart test program for testing that isolates can spawn other isolates and
 // that the nested isolates can communicate with the main once the spawner has
 // disappeared.
 
 #library('NestedSpawn2Test');
 #import("dart:isolate");
-#import('../../../lib/unittest/unittest.dart');
+#import('../../lib/unittest/unittest.dart');
 
 class IsolateA extends Isolate {
   IsolateA() : super.heavy();
 
   void main() {
     this.port.receive((msg, replyTo) {
       Expect.equals("launch nested!", msg);
       new IsolateB().spawn().then((SendPort p) {
         p.send(replyTo, null);
         this.port.close();
@@ skipping 52 matching lines @@
             Expect.equals("4", msg[0]);
             _call(replyTo, msg5, expectAsync2((msg, replyTo) {
               Expect.equals("6", msg[0]);
             }));
           }));
         }));
       }));
     }));
   });
 }