Correctly handle the --arch argument to dart test scripts.

tools/test-runtime.dart

 #!/usr/bin/env dart
 // Copyright (c) 2011, 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.
 
 // TODO(ager): Get rid of this version of test.dart when we don't have
 // to worry about the special runtime checkout anymore.
 
 #library("test");
 
@@ skipping 12 matching lines @@
   var startTime = new Date.now();
   var optionsParser = new TestOptionsParser();
   List<Map> configurations = optionsParser.parse(new Options().arguments);
   if (configurations == null) return;
 
   // Extract global options from first configuration.
   var firstConf = configurations[0];
   Map<String, RegExp> selectors = firstConf['selectors'];
   var maxProcesses = firstConf['tasks'];
   var progressIndicator = firstConf['progress'];
+  var verbose = firstConf['verbose'];
 
   var configurationIterator = configurations.iterator();
   bool enqueueConfiguration(ProcessQueue queue) {
     if (!configurationIterator.hasNext()) {
       return false;
     }
 
     var conf = configurationIterator.next();
     if (selectors.containsKey('standalone')) {
       queue.addTestSuite(new StandaloneTestSuite(conf));
@@ skipping 14 matching lines @@
       queue.addTestSuite(new StubGeneratorTestSuite(conf));
     }
     if (conf['component'] == 'vm' && selectors.containsKey('vm')) {
       queue.addTestSuite(new VMTestSuite(conf));
     }
 
     return true;
   }
 
   // Start process queue.
-  var queue = new ProcessQueue(firstConf['tasks'],
-                               firstConf['progress'],
+  var queue = new ProcessQueue(maxProcesses,
+                               progressIndicator,
+                               verbose,
                                startTime,
                                enqueueConfiguration);
 }