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

samples/total/src/Dartc.dart

Index: samples/total/src/Dartc.dart
diff --git a/samples/total/src/Dartc.dart b/samples/total/src/Dartc.dart
index 231ac06a9ca910a9e610f4eaffefaa27b5cbc6a4..b48e49db45b7b104c2758096f83ac792a6a57379 100644
--- a/samples/total/src/Dartc.dart
+++ b/samples/total/src/Dartc.dart
@@ -1,9 +1,11 @@
-// 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:dartc");
 
+#import('dart:io');
+
 /**
  * A simple wrapper around dartc.
  * TODO: automatically determine the exec path to dartc