Split dart:builtin into dart:builtin and dart:io.

samples/total/src/TotalRunner.dart

Index: samples/total/src/TotalRunner.dart
diff --git a/samples/total/src/TotalRunner.dart b/samples/total/src/TotalRunner.dart
index f6c1e05d91c63806c0925d5d59a48bdc5082f6c2..2ba060a0443430e00e8cb9e4963972b707aa8976 100755
--- a/samples/total/src/TotalRunner.dart
+++ b/samples/total/src/TotalRunner.dart
@@ -1,10 +1,12 @@
 #!/usr/bin/env dart
-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// 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("total:runner");
 
+#import('dart:io');
+
 typedef void ExitCallback(int status, String exitString);
 
 void main() {