Import NetBSD Secure Shell.  This is based on OpenSSH, but modified
somewhat.
NetBSD Secure Shell, based on OpenSSH 2.3.0 around 1/5/2001
OpenSSH 2.3.1 as of 2001/2/8
OpenSSH 2.3.2 as of 2001/2/9
OpenSSH 2.3.2 as of 2001/2/14
OpenSSH 2.5.0 as of 2001/2/17
OpenSSH 2.5.1 as of 2001/2/19
OpenSSH 2.5.2 as of 3/19/2001, from openbsd usr.bin/ssh
OpenSSH 2.5.4 as of 2001/04/10
OpenSSH 2.9 as of 2001/5/15
prime table for OpenSSH, from OpenBSD etc/primes
On note by kleink: Add primes.5 to crypto/dist/ssh instead of share/man/man5.
Import state of 2001-06-14.
OpenSSH 2.9 as of 2001/6/24
OpenBSD 2001/6/24
OpenSSH 2.9.9 as of 2001/9/27
OpenSSH 3.0 as of 2001/11/7
OpenSSH 3.0.1 as of 2001/11/27.  minor bugfixes only.
OpenSSH 3.0.2 as of 2001/12/06.  fixes environment variable passing in UseLogin=yes
OpenSSH 3.1 as of 2002/3/8.  plugs off-by-one security hole
OpenSSH 3.2 as of 2002/4/22.  fixes issues with AFS/kerberos auth