ENYO-3506: correcting cancellation on updateConfigXML step
ENYO-3506: correcting cancellation on updateConfigXML step

enyo.xhr.cancel should not be called during cancellation since req.xhr is not an AJAX request (req is filesystem object). Aborting should not crash an ongoing disk i/o operation. Instead the operation must complete successfully or fail, and then if a cancellation has been requested it will be handled at response time.

mcanthony/ares-project,mcanthony/ares-project,mcanthony/ares-project,enyojs/ares-project,mcanthony/ares-project,enyojs/ares-project,enyojs/ares-project,enyojs/ares-project,enyojs/ares-project,mcanthony/ares-project,mcanthony/ares-project