Add support for client/dartc compilation only tests.

tools/test.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.
 
 #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");
 #import("../samples/tests/samples/test_config.dart");
+#import("../client/tests/dartc/test_config.dart");
 #import("../frog/tests/frog/test_config.dart");
 #import("../frog/tests/leg/test_config.dart");
 #import("../frog/tests/leg_only/test_config.dart");
 
 main() {
   var startTime = new Date.now();
   var optionsParser = new TestOptionsParser();
   List<Map> configurations = optionsParser.parse(new Options().arguments);
   if (configurations == null) return;
 
@@ skipping 36 matching lines @@
     }
     if (selectors.containsKey('frog')) {
       queue.addTestSuite(new FrogTestSuite(conf));
     }
     if (selectors.containsKey('leg')) {
       queue.addTestSuite(new LegTestSuite(conf));
     }
     if (selectors.containsKey('leg_only')) {
       queue.addTestSuite(new LegOnlyTestSuite(conf));
     }
+    if (selectors.containsKey('dartc')) {
+      queue.addTestSuite(new ClientDartcTestSuite(conf));
+    }
 
     return true;
   }
 
   // Start process queue.
   var queue = new ProcessQueue(maxProcesses,
                                progressIndicator,
                                startTime,
                                enqueueConfiguration);
 }