[TIMOB-17582] iOS: Unable to check if a JS source file exists on iPad device

var createController = Alloy.createController;
   
   /**
    * Override the Alloy createController method.
    * 
    * Prepends 'ipad/' to the controller name if the controller exist in the ipad folder
    */
   Alloy.createController = function(name, args) {
       var osname = Ti.Platform.osname;
       alert(osname);
       var controllerPath = Ti.Filesystem.resourcesDirectory + 'alloy/controllers/';
       // search controller in the os name folder
       var controllerName = osname + '/' + name;
       var file = Ti.Filesystem.getFile(controllerPath, controllerName + '.js');
       Ti.API.log(file.name);
       // load the controller in the platform folder if found, other load the default
       if (file.exists()) {
           name = controllerName;
       }
       
       Ti.API.log(controllerPath);
       Titanium.API.log('Controller Name: ' + name);
       return createController(name, args);
   };
   
   /**
    * Loads "ipad/HelloWorld.js" for ipad, and "HelloWorld.js" for other devices
    */
   var controllerName = 'HelloWorld';
   var label = Alloy.createController(controllerName).getView();
   
   $.index.add(label);
   $.index.open();

var getController = function(name) {
       var osname = Ti.Platform.osname;
       if(osname == 'ipad'){
       	name = 'HelloWorld';
       	Ti.API.info('iPad this time');
       }
       var controllerPath = Ti.Filesystem.resourcesDirectory + 'alloy/controllers/';
       // search controller in the os name folder
       var controllerName = osname + '/' + name;
       var file = Ti.Filesystem.getFile(controllerPath, controllerName + '.js');
       Ti.API.info(name +' controllerPath + controllerName: '+ controllerPath + controllerName );
       // load the controller in the platform folder if found, other load the default
       //if (file.exists()) {
           name = controllerName;
           Ti.API.info('file.nativePath: '+ file.nativePath);
           return require('alloy/controllers/' + controllerName).HelloWorld();
       // }else{
       	// Titanium.API.log('Controller Name: ' + controllerName);
       	// return require('alloy/controllers/' + controllerName).HelloWorld();    	
       // }
       
   };
   
   /**
    * Loads "ipad/HelloWorld.js" for ipad, and "HelloWorld.js" for other devices
    */
   var controllerName = 'HelloWorld';
   var label = getController(controllerName);
   
   win1.add(label);
   
   win1.open();