- (dtucker) [acconfig.h configure.ac includes.h servconf.c session.c]
   Change AFS symbol to USE_AFS to prevent namespace collisions, do not
   include kafs.h unless necessary.  From deengert at anl.gov.

For consistency, all of the libkafs bits are now inside "#if defined(KRB5)
&& defined(USE_AFS)".
diff --git a/servconf.c b/servconf.c
index 04a10fa..a72246b 100644
--- a/servconf.c
+++ b/servconf.c
@@ -305,7 +305,7 @@
 	{ "kerberosauthentication", sKerberosAuthentication },
 	{ "kerberosorlocalpasswd", sKerberosOrLocalPasswd },
 	{ "kerberosticketcleanup", sKerberosTicketCleanup },
-#ifdef AFS
+#ifdef USE_AFS
 	{ "kerberosgetafstoken", sKerberosGetAFSToken },
 #else
 	{ "kerberosgetafstoken", sUnsupported },