Added AppleTalk to the list of supported protocol domains.

lib/libc/sys/socket.2

@@ -1,4 +1,4 @@
-.\"	$NetBSD: socket.2,v 1.8 1998/07/18 05:04:36 lukem Exp $
+.\"	$NetBSD: socket.2,v 1.9 1998/07/21 20:02:38 jeremy Exp $
 .\"
 .\" Copyright (c) 1983, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -63,6 +63,7 @@ AF_INET		ARPA Internet protocols
 AF_ISO		ISO protocols
 AF_NS		Xerox Network Systems protocols
 AF_IMPLINK	IMP \*(lqhost at IMP\*(rq link layer
+AF_APPLETALK	AppleTalk protocols
 .Ed
 .Pp
 The socket has the indicated