isolates refactor: this change introduces 'dart:isolate' as a library. This is a

tests/corelib/src/FuturesTest.dart

Index: tests/corelib/src/FuturesTest.dart
diff --git a/tests/corelib/src/FuturesTest.dart b/tests/corelib/src/FuturesTest.dart
index 7347e227f8529cd2316c6f880b991d60df4aac65..07ef23a4446cdf718c390ae3fdcf0dadd8ccef87 100644
--- a/tests/corelib/src/FuturesTest.dart
+++ b/tests/corelib/src/FuturesTest.dart
@@ -2,6 +2,9 @@
 // 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("FuturesTest");
+#import("dart:isolate");
+
 Future testWaitEmpty() {
   List<Future> futures = new List<Future>();
   return Futures.wait(futures);