[ALOY-150] Change the current hidden exports to be explicit just as in regular commonjs

   var MyModel = Backbone.Model.extend({});
   var instance = new MyModel();
   

   // make the getController return a controller definition instead of
   // an instance of a controller.
   var MyController = Alloy.getController('myController');
   
   // we could then use an extend function, just like Backbone, to allow
   // a new derivative controller to inherit from another.
   var MyDerivativeController = MyController.extend({
       customProperty: 1,
       customFunction: function() {}
   });
   
   // use new to create an instance
   var controller = new MyDerivativeController();
   
   // Or if you prefer a single assignment
   var controller = new Alloy.getController('myController').extend({
       customProperty: 1,
       customFunction: function() {}
   });
   

   var controller = Alloy.getController('myController').create({});
   

function init() {
       return Alloy.getController('MySuperController').extend({
           customProperty: 123,
           customFunction: function(){},
           preLayout: function(args) { 
               // execute code before view hierarchy is established 
           }
       });
   }

function Controller() {
       Alloy.getController('BaseController').call(this); // can eventually be set by markup
       var $ = this;
   
       // the rest of the view and controller code
   }
   

<Alloy parentController="MyParentController"/>