Add radiusd(8) and radiusctl(8). They are WIP. radiusd(8) is a RADIUS

server and radiusctl(8) is to control the server.  radiusd(8) currently
supports bsdauth and radius (upstream radius servers) as authentication
backends.
fixes from jsg blambert
ok deraadt

src/etc/mtree/4.4BSD.dist

@@ -1,4 +1,4 @@
-#	$OpenBSD: 4.4BSD.dist,v 1.271 2015/04/30 19:02:15 ajacoutot Exp $
+#	$OpenBSD: 4.4BSD.dist,v 1.272 2015/07/21 04:06:04 yasuoka Exp $
 
 /set type=dir uname=root gname=wheel mode=0755
 
@@ -183,6 +183,8 @@ usr
         ..
         lpr
         ..
+        radiusd			type=dir uname=root gname=wheel mode=0755
+        ..
         smtpd			type=dir uname=root gname=wheel mode=0755
         ..
     ..