Make multi tests work with DartC.

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");
 
 #import("testing/dart/test_runner.dart");
 #import("testing/dart/test_options.dart");
 
 #import("../tests/co19/test_config.dart");
 #import("../tests/corelib/test_config.dart");
 #import("../tests/isolate/test_config.dart");
 #import("../tests/language/test_config.dart");
 #import("../tests/standalone/test_config.dart");
 #import("../tests/stub-generator/test_config.dart");
 #import("../runtime/tests/vm/test_config.dart");
 
 main() {
   var startTime = new Date.now();
   var optionsParser = new TestOptionsParser();
-  var configurations = optionsParser.parse(new Options().arguments);
+  List<Map> configurations = optionsParser.parse(new Options().arguments);
   if (configurations == null) return;
+
   // Extract global options from first configuration.
   var firstConf = configurations[0];
-  var queue = new ProcessQueue(firstConf['tasks'],
-                               firstConf['progress'],
-                               startTime);
   Map<String, RegExp> selectors = firstConf['selectors'];
-  for (var conf in configurations) {
+  var maxProcesses = firstConf['tasks'];
+  var progressIndicator = firstConf['progress'];
+
+  var currentConfiguration = 0;

[Bill Hesse, 2011/12/02 13:10:06]

When I did the equivalent thing for serializing multitests, I used an iterator
rather than a integer index.

[Mads Ager (google), 2011/12/02 13:32:49]

Done.

+  bool enqueueConfiguration(ProcessQueue queue) {
+    if (currentConfiguration == configurations.length) {
+      return false;
+    }
+
+    var conf = configurations[currentConfiguration++];
     if (selectors.containsKey('standalone')) {
       queue.addTestSuite(new StandaloneTestSuite(conf));
     }
     if (selectors.containsKey('corelib')) {
       queue.addTestSuite(new CorelibTestSuite(conf));
     }
     if (selectors.containsKey('co19')) {
       queue.addTestSuite(new Co19TestSuite(conf));
     }
     if (selectors.containsKey('language')) {
       queue.addTestSuite(new LanguageTestSuite(conf));
     }
     if (selectors.containsKey('isolate')) {
       queue.addTestSuite(new IsolateTestSuite(conf));
     }
     if (selectors.containsKey('stub-generator')) {
       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'],
+                               startTime,
+                               enqueueConfiguration);
 }