Update project authors statements to Dartino

tests/unsorted/messaging_single_receiver_test.dart

-// Copyright (c) 2014, the Fletch project authors. Please see the AUTHORS file
+// Copyright (c) 2014, the Dartino 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.md file.
 
 import 'dart:fletch';
 
 import 'package:expect/expect.dart';
 
 const int PROCESSES = 1000;
 const int MESSAGES = 100;
 
@@ skipping 11 matching lines @@
   }
   print("Took ${watch.elapsedMicroseconds} us to run $PROCESSES processes with "
         "$MESSAGES messages.");
 }
 
 void processRun(Port output) {
   for (int i = MESSAGES; i >= 0; i--) {
     output.send(i);
   }
 }