usenet-config caught up

I've been way, way behind on processing changes to the hierarchy lists and configuration information. I should now finally be caught up, other than checking and removing some URLs that are no longer good. I've also manually updated the microsoft.* hierarchy and manually added the perl.* hierarchy, since I haven't had a chance yet to write the code to pull down a group list from a remote server. (Plus, some of the perl.* descriptions are, um, long -- too long to be useful.)

Now I just need to find the time to make all the code that maintains those lists public so that someone else can pick it up if they want.