Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Merge r240354 from head:
Do not count kernel threads as processes for hrSystemProcesses OID.

PR: bin/160494
Submitted by: Jeremy Chadwick <freebsd jdc.parodius.com>

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Port all applications in usr.sbin/ from libulog to utmpx.

Let the snmp_hostres module use utmpx.

Approved by: harti

Fix build without -DNDEBUG.

Spotted by: obrien

assert(3) is not used here.

Forced commit because I lost the commit message in the previous commit:

This is the implementation of the HOSTRES MIB that was developed by
Victor during SoC 2005 with some stylification by philip@ and harti@.

Submitted by: Victor Cruceru <soc-victor@freebsd.org>
Reviewed by: philip, harti

msg