getAuthUser needs CFLOGIN

I discovered during some DRK research that the getAuthUser and isUserInRole functions will only work if the CFLOGIN tag was encountered previously within the scope of the same request. In other words, if your CFLOGIN tag is not in your Application.cfm file, and you try to call getAuthUser or isUserInRole during the scope of a request where no CFLOGIN tag was encountered, you get an empty string and false respectively. I never noticed this before because I always have my CFLOGIN tag in my Application.cfm file, where it was clearly intended to go. Fortunately, a quick <cflogin/> tag before you call getAuthUser or isUserInRole fixes the issue by making the necessary variable scope available.