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

tests/standalone/src/ProcessSegfaultTest.dart

Index: tests/standalone/src/ProcessSegfaultTest.dart
diff --git a/tests/standalone/src/ProcessSegfaultTest.dart b/tests/standalone/src/ProcessSegfaultTest.dart
index 3a4a190f1fa94a141ee8a62c9f98715a167830ed..ab2cb484dec5039b735bb0f76d8c82cd2d597f13 100644
--- a/tests/standalone/src/ProcessSegfaultTest.dart
+++ b/tests/standalone/src/ProcessSegfaultTest.dart
@@ -1,10 +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.
 //
 // Process test program to test process communication.
 
 #library("ProcessSegfaultTest");
+#import("dart:io");
 #source("ProcessTestUtil.dart");
 
 class ProcessSegfaultTest {