NB: big update - may break stuff. Please test!

 - (djm) OpenBSD CVS sync:
   - markus@cvs.openbsd.org  2001/02/03 03:08:38
     [auth-options.c auth-rh-rsa.c auth-rhosts.c auth.c canohost.c]
     [canohost.h servconf.c servconf.h session.c sshconnect1.c sshd.8]
     [sshd_config]
     make ReverseMappingCheck optional in sshd_config; ok djm@,dugsong@
   - markus@cvs.openbsd.org  2001/02/03 03:19:51
     [ssh.1 sshd.8 sshd_config]
     Skey is now called ChallengeResponse
   - markus@cvs.openbsd.org  2001/02/03 03:43:09
     [sshd.8]
     use no-pty option in .ssh/authorized_keys* if you need a 8-bit clean
     channel. note from Erik.Anggard@cygate.se (pr/1659)
   - stevesk@cvs.openbsd.org 2001/02/03 10:03:06
     [ssh.1]
     typos; ok markus@
   - djm@cvs.openbsd.org     2001/02/04 04:11:56
     [scp.1 sftp-server.c ssh.1 sshd.8 sftp-client.c sftp-client.h]
     [sftp-common.c sftp-common.h sftp-int.c sftp-int.h sftp.1 sftp.c]
     Basic interactive sftp client; ok theo@
 - (djm) Update RPM specs for new sftp binary
 - (djm) Update several bits for new optional reverse lookup stuff. I
   think I got them all.
diff --git a/ssh.1 b/ssh.1
index 6f10436..99fb8c7 100644
--- a/ssh.1
+++ b/ssh.1
@@ -34,7 +34,7 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.\" $OpenBSD: ssh.1,v 1.80 2001/01/29 12:36:10 djm Exp $
+.\" $OpenBSD: ssh.1,v 1.83 2001/02/04 11:11:55 djm Exp $
 .Dd September 25, 1999
 .Dt SSH 1
 .Os
@@ -753,8 +753,8 @@
 .It Cm HostKeyAlias
 Specifies an alias that should be used instead of the
 real host name when looking up or saving the host key
-the kown_hosts files.
-This option is useful for tunneling ssh connection
+in the known_hosts files.
+This option is useful for tunneling ssh connections
 or if you have multiple servers running on a single host.
 .It Cm HostName
 Specifies the real host name to log into.
@@ -914,8 +914,9 @@
 attempted if the identity file exists, or an authentication agent is
 running.
 Note that this option applies to protocol version 1 only.
-.It Cm SkeyAuthentication
-Specifies whether to use
+.It Cm ChallengeResponseAuthentication
+Specifies whether to use challenge response authentication.
+Currently there is only support for
 .Xr skey 1
 authentication.
 The argument to this keyword must be
@@ -1270,6 +1271,7 @@
 .Xr rlogin 1 ,
 .Xr rsh 1 ,
 .Xr scp 1 ,
+.Xr sftp 1 ,
 .Xr ssh-add 1 ,
 .Xr ssh-agent 1 ,
 .Xr ssh-keygen 1 ,