darkstat v3.0.540 and earlier defaulted to running in the foreground
and had a "-d" commandline argument to get darkstat to daemonize,
detach from the controlling terminal, and run in the background.

Since r540, the default has been inverted.  darkstat will daemonize by
default.  This behaviour can be suppressed with the "-D" commandline
argument, to force darkstat to stay in the foreground for debugging
purposes.

The "-d" argument is no longer recognized by darkstat, and will
prevent it from starting, so make sure you adjust any startup scripts
you may have.
