Update project authors statements to Dartino

lib/core/embedded_core_patch.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.core_patch;
 
 import 'dart:fletch._system' as fletch;
 import 'dart:fletch._system' show patch;
 
 part 'bigint.dart';
 part 'case.dart';
@@ skipping 643 matching lines @@
 
   @fletch.native external static int _getCurrentMs();
 
   @fletch.native external static String _timeZone(int clampedSecondsSinceEpoch);
 
   @fletch.native external static int _timeZoneOffset(
       int clampedSecondsSinceEpoch);
 
   @fletch.native external static int _localTimeZoneOffset();
 }