Fix runtime restarts due to sending the wrong flags to dbus.

In eventLoopMain we were correctly translating from unix events to dbus flags,
but a coding typo then gave the unix events to dbus. Fix this typo.

Also noticed that we were passing raw dbus flags to poll() in another area.
This did not cause any immediate problem, since POLLIN | POLLPRI is harmless
and we do not usually need POLLOUT. But fixed anyway.