Merge pull request #1706 from joeljeske/fix-production-global-polyfil…

…l-scoping

Fix the context scope of SystemJS.register when called from browsers System.register

src/system-production.js

@@ -19,7 +19,7 @@ if (isBrowser || isWorker) {
     global.System.register = function () {
       if (register)
         register.apply(this, arguments);
-      System.register.apply(this, arguments);
+      System.register.apply(System, arguments);
     };
   }
 }