15:44 Gleb Popov (arrowd) 

Uses/dbus-testing.mk: Introduce new USES

This USES starts a system- and session-level D-Bus daemons before the
test stage and stops them after, much like Uses/display.mk provides an
X11 display.

It is intended to be used with ports whose testing require a running dbus
daemon.

Approved by:	portmgr (bapt)
Sponsored by:	Future Crew, LLC
Differential Revision: https://reviews.freebsd.org/D53464

    c4705d6