Rename fletch -> dartino

tests/debugger/restart_compile_time_error_test.dart

 // 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.
 
-// FletchDebuggerCommands=r,restart,q
+// DartinoDebuggerCommands=r,restart,q
 
 // Force compile-time error.
 void fiskHest() {
   default;
 }
 
 main() {
   print('begin');
   fiskHest();  // compile-time error
 }