[modules] Support star exports.

test/mjsunit/modules-skip-6.js

Index: test/mjsunit/modules-skip-6.js
diff --git a/test/message/for-of-throw-in-body.js b/test/mjsunit/modules-skip-6.js
similarity index 64%
copy from test/message/for-of-throw-in-body.js
copy to test/mjsunit/modules-skip-6.js
index 38b27f38632520e292f66b7ab451df00c2c03b68..4a0ef8da645c76bf0612231edaeb14df47132840 100644
--- a/test/message/for-of-throw-in-body.js
+++ b/test/mjsunit/modules-skip-6.js
@@ -2,4 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-for (var x of [1, 2, 3]) { throw 42 }
+export * from "modules-skip-1.js";
+export * from "modules-skip-5.js";
+export const a = 10;