Correct a port number assignment.

PR: 236930
MFC after: 1 week

Update bsnmp to version 1.13. This does not bring user-visible changes.
For developers gensnmptree can now generate functions for enums to convert
between enums and strings and to check the validity of a value.
The sources in FreeBSD are now in sync with the upstream which allows to
bring in IPv6 modifications.

Use strlcpy when copying `com` to pdu->community to avoid potential
buffer overruns

MFC after: 1 week
Reported by: Coverity
CID: 1006823, 1006824

style(9): clean up trailing whitespace

MFC after: 3 weeks

style(9): fix trailing whitespace

MFC after: 3 days

Update engine time using update_snmpd_engine_time(..)

MFC after: 6 days
X-MFC with: r310498
Sponsored by: Dell EMC Isilon

Staticize several variables that are used exclusively in bsnmpd/main.c and
bsnmpd/trap.c

This fixes several -Wmissing-variable-declaration warnings noted by clang

Differential Revision: https://reviews.freebsd.org/D4718
MFC after: 1 week
Reported by: Jenkins
Reviewed by: araujo
Sponsored by: EMC / Isilon Storage Division

Fully initialize the stack-allocated "struct sockaddr_in sa" structure.

Bring in a SNMP module that allows configuration of SNMPv3 Notification targets.

Sponsored by: The FreeBSD Foundation
Reviewed by: philip
Approved by: philip

In bsnmpd(1) add support for SNMPv3 message processing model, including message authentication, packet encryption & view-based access control (RFC 3412, 3414, 3415).

Sponsored by: The FreeBSD Foundation
Reviewed by: philip@ (mostly)
Approved by: philip@

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.

Virgin import of bsnmpd 1.11

Virgin import of bsnmpd 1.7

Import of bsnmpd 1.6

Virgin import of bsnmpd 1.5a

Virgin import of bsnmp 1.4