Make args package follow new layout.

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 77 matching lines @@
  *
  * Running testrunner with a `--generate-renders` flag will make it create
  * .render files for you.
  */
 
 // 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/args.dart');
+#import('../../pkg/args/lib/args.dart');
 
 #source('configuration.dart');
 #source('dart_task.dart');
 #source('dart_wrap_task.dart');
 #source('dart2js_task.dart');
 #source('delete_task.dart');
 #source('drt_task.dart');
 #source('html_wrap_task.dart');
 #source('macros.dart');
 #source('options.dart');
@@ skipping 208 matching lines @@
         }
         buildFileList(dirs,
             new RegExp(options['test-file-pattern']), options['recurse'],
             (f) => processTests(pipelineTemplate, f));
       }
     }
   }
 }