[TIMOB-18424] Windows: Improve require implementation

We should use a fully implemented algorithm for our require implementation that generally follows the Node.JS spec: http://nodejs.org/api/modules.html#modules_all_together Tony L has implemented on top of Titanium APis for Ti.current, and Jeff H implemented in Objective-C. We also had an impl in Hyperloop, all of which we can try and re-use leverage. https://github.com/appcelerator/hyperloop/blob/d61131ff1bf828cc9ecc5672a45ba8627bdba974/lib/ios/jsc/templates/source/Module.m#L228