Added ability to have custom test HTTP server handlers in the test directories.

utils/testrunner/testrunner.dart

 //#!/usr/bin/env 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.
 
 /**
  * testrunner is a program to run Dart unit tests. Unlike $DART/tools/test.dart,
  * this program is intended for 3rd parties to be able to run unit tests in
  * a batched fashion. As such, it adds some features and removes others. Some
  * of the removed features are:
@@ skipping 56 matching lines @@
  * which is run in an isolate. The `--pipeline` argument can be used to
  * specify a different script for running a test file pipeline, allowing
  * customization of the pipeline.
  */
 
 // TODO - layout tests that use PNGs rather than DRT text render dumps.
 library testrunner;
 import 'dart:io';
 import 'dart:isolate';
 import 'dart:math';
-import '../../pkg/args/lib/args.dart';
+import 'package:args/args.dart';
 
 part 'options.dart';
 part 'utils.dart';
 
 /** The set of [PipelineRunner]s to execute. */
 List _tasks;
 
 /** The maximum number of pipelines that can run concurrently. */
 int _maxTasks;
 
@@ skipping 186 matching lines @@
         dirs.add('.'); // Use current working directory as default.
       }
       buildFileList(dirs,
           new RegExp(options['test-file-pattern']), options['recurse'],
           (f) => processTests(config, f));
     }
   }
 }