It seems to come from an era where long long didn't exist and 64-bit
machines weren't common. 32-bit machines are still common but I can't
imagine this will have much performance impact there.
This "fixes" #179 in title only, but see comments within.
Provider ID's are now assigned dynamically at load-time. To accomodate
this, there is now a lookup system for finding providers by name (all
providers have names as well).
This also does a lot of surgery on the conf system to reconfigure authd.
/!\ WARNING! ACHTUNG! ADVERTENCIA! ATTENTION! AVVERTIMENTO! /!\
This code has not been run-time tested yet (though it compiles)!
