[TIMOB-8082] iOS: Global variables are accessible in CommonJS module's scope

Globals can be brought in to the module's scope on iOS. Please see the following code. *SAMPLE CODE* {noformat} app.js ================================ var App = {}; var myModule = require('myModule'); new myModule(); myModule.js ================================ App.MyModule = function() { return Ti.UI.createWindow({backgroundColor:'red'}).open(); }; module.exports = App.MyModule; {noformat} *STEPS TO REPRODUCE* 1. Create a Titanium Mobile project and copy the following code into app.js and myModule.js 2. Run the project and a blank window with red background color will be seen *OBSERVED BEHAVIOR* 1. Window with red background color is seen. *EXPECTED BEHAVIOR* 1. A runtime error indicating the use of global object. *OTHER OBSERVATIONS* 1. On Android, a runtime error is noticed with the message "Uncaught ReferenceError: App is not defined"