Implement addStream for HttpClientRequest/HttpResponse and propegate all write-errors from the sock…

tests/standalone/io/http_request_pipeling_test.dart

Index: tests/standalone/io/http_request_pipeling_test.dart
diff --git a/tests/standalone/io/http_request_pipeling_test.dart b/tests/standalone/io/http_request_pipeling_test.dart
index 4e99c278032c2e37d844d89f270813e9fded45bd..a96fa8895d4383182773b5b7310a589678f70a2a 100644
--- a/tests/standalone/io/http_request_pipeling_test.dart
+++ b/tests/standalone/io/http_request_pipeling_test.dart
@@ -1,6 +1,11 @@
 // Copyright (c) 2013, 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.
+//
+// VMOptions=
+// VMOptions=--short_socket_read
+// VMOptions=--short_socket_write
+// VMOptions=--short_socket_read --short_socket_write
 
 import "dart:io";
 import "dart:uri";