Rip out the last dart:io dependency from pkg/http.

pkg/http/test/io/client_test.dart

Index: pkg/http/test/io/client_test.dart
diff --git a/pkg/http/test/client_test.dart b/pkg/http/test/io/client_test.dart
similarity index 95%
rename from pkg/http/test/client_test.dart
rename to pkg/http/test/io/client_test.dart
index 6f397fa5fee89f2a74ea857be895eb563c263ff6..b9cc5fa911674342a2ea132bf116f06a891a4b53 100644
--- a/pkg/http/test/client_test.dart
+++ b/pkg/http/test/io/client_test.dart
@@ -1,8 +1,8 @@
-// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, 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 client_test;
+library http.test.io.client_test;
 
 import 'dart:io';