Fixup some incorrect information and some comments. These changes
were cherry picked up the upstream OpenBSD repository. At some point we
will look at doing another import, but the diffs are substantial and will
require some careful testing.

Differential Revision: https://reviews.freebsd.org/D25021
MFC after: 2 weeks
Submitted by: gbe
Reviewed by: myself, bcr

In r316006 the getstrfromtype_locked() function was modified to return
an empty string, instead of NULL, if an entry is missing in the audit_control
file. Because of that change the getachost() function started to return
success even if the host name was not defined in the audit_control.
This in turn led to auditd_hostlen always being set (for an empty host it was
set to 0). If auditd_hostlen was not equal to -1 we were trying to append
the host name to trail file name. All this led to situation where when host
name is not defined in audit_control, auditd will create trail files with
a leading '.', which breaks auditdistd as it doesn't work with longer audit
trail file names.

Fix this by appending host name to the trail file name only if the host name
is not empty.

auditd(8): Log a better error when no hostname is set in audit_control

Cherry-pick from https://github.com/openbsm/openbsm/commit/01ba03b

Reviewed by: cem
Obtained from: OpenBSM
MFC after: 2 weeks
Pull Request: https://github.com/openbsm/openbsm/pull/38

Merge a local fix to OpenBSM's libauditd to avoid a directory descriptor
leak when iterating over possible audit trail directories. This fix will
be merged upstream in an identical form, but hasn't yet appeared in an
OpenBSM release.

Submitted by: guido
Obtained from: TrustedBSD Project
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.