Update project authors statements to Dartino

lib/system/system.dart

-// Copyright (c) 2015, the Fletch project authors. Please see the AUTHORS file
+// Copyright (c) 2015, 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.
 
 library dart.fletch._system;
 
 import 'dart:_internal' hide Symbol;
 import 'dart:collection';
 import 'dart:fletch';
 import 'dart:math';
 
@@ skipping 67 matching lines @@
 /// Make the current process yield. Either to allow other fibers to
 /// make progress or to terminate execution.
 external yield(int reason);
 
 external get nativeError;
 
 // Change execution to [coroutine], passing along [argument].
 external coroutineChange(coroutine, argument);
 
 const patch = "patch";