[$] Init system support in Debian

The "systemd question" has roiled Debianmultiple times over the years, but things had mostly been quiet on thatfront of late. The Devuan distributionis a Debian derivative that has removed systemd; many of the vocalanti-systemd Debian developers have switched, which helps reduce thefriction on the Debian mailing lists. But that seems to have led tosupport for init system alternatives (and System V init in particular) tobitrot in Debian. There are signs that a bit of reconciliation betweenDebian and Devuan will help fix that problem.