Fix latest XHR change to work on Firefox Mac which uses just \n as separator for getAllHeaders
Fix latest XHR change to work on Firefox Mac which uses just \n as separator for getAllHeaders

Enyo-DCO-1.1-Signed-Off-By: Ben Combee (ben.combee@palm.com)

PKRoma/enyo,enyojs/enyo,PKRoma/enyo,beni55/enyo,enyojs/enyo,bright-sparks/enyo,kustomzone/enyo,airspringsoftware/enyo,beni55/enyo,bright-sparks/enyo,wikieswan/enyo,wikieswan/enyo,airspringsoftware/enyo,mcanthony/enyo,zefsolutions/enyo,soapdog/enyo,mcanthony/enyo,kustomzone/enyo,zefsolutions/enyo,soapdog/enyo