Before this commit the boolean member Daemon::m_runAsStagerSuperuser was
being set by calling Daemon::runAsStagerSuperuser() and was used by
calling Daemon::daemonizeIfNotRunInForeground().  There was no benefit
gain from this two step approach.  I have therefore effectively moved
the member variable Daemon::m_runAsStagerSuperuser to be a parameter to
daemonizeIfNotRunInForeground().