Changed gatekeeper authentication method to configuration variable
Changed gatekeeper authentication method to configuration variable

AUTH_METHOD now controls whether "webiso" or "htaccess" is used
for authentication to the OpenDiamond GATEKEEPER.

cmusatyalab/opendiamond,cmusatyalab/opendiamond,cmusatyalab/opendiamond,cmusatyalab/opendiamond,cmusatyalab/opendiamond