[Bug 277959] Refactor of usr.sbin/daemon caused regression in restart parameter

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=277959

--- Comment #6 from Kyle Evans <kevans@freebsd.org> ---
I have a tentative patch for this, but I'm still thinking about it a little
bit.  My current approach is to pull the kqueue out of the eventloop and stop
recreating it every time; the pipe read event will drop out when we close the
read-side and leave just the signals.  daemon_sleep() then switches to using a
one-shot EVFILT_TIMER instead of nanosleep(2) so that it can still process
signals received in the interim following a previously processed SIGCHLD.

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