test rename overhaul: step 6 - isolate tests

tests/isolate/mandel_isolate_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('MandelIsolateTest');
 #import('dart:isolate');
-#import('../../../lib/unittest/unittest.dart');
+#import('../../lib/unittest/unittest.dart');
 
 final TERMINATION_MESSAGE = -1;
 final N = 100;
 final ISOLATES = 20;
 
 main() {
   test("Render Mandelbrot in parallel", () {
     final state = new MandelbrotState();
     state._validated.future.then(expectAsync1((result) {
       expect(result).isTrue();
@@ skipping 125 matching lines @@
 
         Trv = Zrv * Zrv;
         Tiv = Ziv * Ziv;
       } while (((Trv + Tiv) <= 4.0) && (--i > 0));
 
       result[x] = i;
     }
     return result;
   }
 }