Radium pidfile

[Phillip Deneault]

In the manpage of radium, it specifies in the 'FILES' section a PID file
that gets created.  However, I don't see a file that is created nor do I
see how to create one since nothing else in the man page explicitly
speaks of a PID.  I've tried setting one the same way argus does in its
config except its called 'RADIUM_SET_PID' and 'RADIUM_PID_PATH' but
alas, no luck.  I'm running 3.0-3.17.

Should their be one?

Phil