test rename overhaul: step 12 - standalone

tests/standalone/io/http_date_test.dart

 // 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.
 
-#source("../../../../runtime/bin/http_utils.dart");
+#source("../../../runtime/bin/http_utils.dart");
 
 class HttpException implements Exception {
   const HttpException([String this.message = ""]);
   String toString() => "HttpException: $message";
   final String message;
 }
 
 void testParseHttpDate() {
   TimeZone utc = new TimeZone.utc();
   Date date;
@@ skipping 66 matching lines @@
   Expect.throws(() {
     _HttpUtils.parseDate("$valid ");
   });
 }
 
 void main() {
   testParseHttpDate();
   testFormatParseHttpDate();
   testParseHttpDateFailures();
 }