• Update to 2.12

Included in this PR is reload support requested by ports/126476 in addition to a
change in the location of the PID file. I have however opted to move this file to
NAGIOSDIR to reduce the number of directories created by all Nagios related ports.

PR: 128409
Submitted by: Jarrod Sayers <jarrod@netleader.com.au> (maintainer)