Merge pull request #318 from pvginkel/fill-is-es6

The Array.prototype.fill function is an ES6 function.

test/built-ins/Array/prototype/fill/S22.1.3.6_T1.js

@@ -2,7 +2,7 @@
 // This code is governed by the BSD license found in the LICENSE file.
 
 /*---
-es5id: 22.1.3.6_T1
+es6id: 22.1.3.6_T1
 description: Testing Array#fill
 author: Hank Yates (hankyates@gmail.com)
 includes: [runTestCase.js]