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

runtime/bin/buffer_list.dart

Index: runtime/bin/buffer_list.dart
diff --git a/runtime/bin/buffer_list.dart b/runtime/bin/buffer_list.dart
index 7dc7c601b2e17ede22f1db7431a33f7f8cf3c33d..1a0561daf8768f7dc0aa32417968332f26c88fe4 100644
--- a/runtime/bin/buffer_list.dart
+++ b/runtime/bin/buffer_list.dart
@@ -2,6 +2,8 @@
 // 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("io");

[Ivan Posva, 2012/01/21 20:24:55]

It would be nice to pull this out into its own file and make sure it is listed
first in the gypi, with an appropriate comment.

Also this library makes use of "dart:nativewrappers" and "dart:coreimpl", so
that should be properly imported here. See builtin.dart for example.

[Mads Ager (google), 2012/01/23 11:35:38]

Restored the imports of coreimpl and nativewrappers. Extracted a io.dart file
which needs to be listed first in the gypi. Thanks!

+
 /**
  * Utility class that holds a number of byte buffers and can deliver
  * the bytes either one by one or in chunks.