Rename fletch -> dartino

tests/unsorted/spawn_argument_test.dart

 // 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 'dart:dartino';
 
 import 'package:expect/expect.dart';
 import 'package:isolate/process_runner.dart';
 
 main() {
   Expect.throws(() => Process.spawn(noarg, 99), (e) => e is ArgumentError);
   Expect.throws(() => Process.spawn(arg), (e) => e is ArgumentError);
   Expect.throws(() => Process.spawn(arg, null), (e) => e is ArgumentError);
 
   withProcessRunner((runner) {
@@ skipping 11 matching lines @@
 }
 
 void arg(arg) { }
 void noarg() { }
 
 void arg0(arg) => Expect.equals(0, arg);
 void arg42(arg) => Expect.equals(42, arg);
 void arg87([arg = 87]) => Expect.equals(87, arg);
 
 void argFoo(arg) => Expect.equals('foo', arg);