-fix use of arguments and remove an outdated section

-Xr mkfifo(2)
(btw, SUSv3 says that the only portable use of mknod() is to create
a FIFO. This is not supported by NetBSD.)

lib/libc/sys/mknod.2

@@ -1,4 +1,4 @@
-.\"	$NetBSD: mknod.2,v 1.18 2004/05/13 10:20:58 wiz Exp $
+.\"	$NetBSD: mknod.2,v 1.19 2007/01/18 14:07:01 drochner Exp $
 .\"
 .\" Copyright (c) 1980, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -29,7 +29,7 @@
 .\"
 .\"     @(#)mknod.2	8.1 (Berkeley) 6/4/93
 .\"
-.Dd June 4, 1993
+.Dd January 18, 2007
 .Dt MKNOD 2
 .Os
 .Sh NAME
@@ -45,26 +45,16 @@
 The device special file
 .Fa path
 is created with the major and minor
-device numbers extracted from
-.Fa mode .
+device numbers specified by
+.Fa dev .
 The access permissions of
 .Fa path
-are descendant from the
+are extracted from
+.Fa mode ,
+modified by the
 .Xr umask 2
 of the parent process.
 .Pp
-If
-.Fa mode
-indicates a block or character special file,
-.Fa dev
-is a configuration dependent specification of a character or block
-I/O device and the superblock of the device.
-If
-.Fa mode
-does not indicate a block special or character special device,
-.Fa dev
-is ignored.
-.Pp
 .Fn mknod
 requires super-user privileges.
 .Sh RETURN VALUES
@@ -119,6 +109,7 @@ points outside the process's allocated address space.
 .El
 .Sh SEE ALSO
 .Xr chmod 2 ,
+.Xr mkfifo 2 ,
 .Xr stat 2 ,
 .Xr umask 2
 .Sh HISTORY