Allow Platform.executable for JIT app snapshots.

tests/standalone/io/stdio_implicit_close_test.dart

 // Copyright (c) 2013, the Dart 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 file.
 
+// OtherResources=stdio_implicit_close_script.dart
+
 import "package:async_helper/async_helper.dart";
 import "package:expect/expect.dart";
 import "dart:convert";
 import "dart:io";
 
 void test({bool closeStdout, bool closeStderr}) {
   var scriptFile = "stdio_implicit_close_script.dart";
   var script = Platform.script.resolve(scriptFile).toFilePath();
 
   // Relying on these flags to print something specific on stdout and stderr
@@ skipping 32 matching lines @@
 }
 
 void main() {
   asyncStart();
   test(closeStdout: false, closeStderr: false);
   test(closeStdout: false, closeStderr: true);
   test(closeStdout: true, closeStderr: false);
   test(closeStdout: true, closeStderr: true);
   asyncEnd();
 }