options `start' and `stop' now (unless I have forgotten any). This allows
us to call the scripts from /etc/rc.shutdown with the correct option.
The (42 or so) ports that already DTRT before are unchanged.
configurable limits on jobs on a per queue basis as well as for the
total queue system.
It is based on the de facto NQS standards and is interoperable with
commercial NQS products.
PR: 6699
Submitted by: Tony Maher <tonym@angis.org.au>