heimdal: Check return code from _hdb_fetch_kvno()

A malformed principal will cause kadmind to segfault. The PR
addresses only when chpass is requested but delete is also affected.
Fix both.

PR: 268002
Reported by: Robert Morris <rtm@lcs.mit.edu>
MFC after: 3 days

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

Create the altix project branch. The altix project will add support
for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting
is a two-module system, consisting of a base compute module and a
CPU expansion module. SGI's NUMAFlex architecture can be an excellent
platform to test CPU affinity and NUMA-aware features in FreeBSD.

- Import the HEAD csup code which is the basis for the cvsmode work.

Vendor import of Heimdal 1.1

import of heimdal 0.3e

Import KTH Heimdal, which will be the core of our Kerberos5.
Userland to follow.