Make GTestDBus work with dbus-broker
My Fedora 30 machine has dbus-broker. No sign of dbus-daemon. This makes distchecking GTK on this system impossible, since g_test_dbus_up() throws a critical. It would be very useful (but probably not trivial) to make GTestDBus work with dbus-broker. Failing that, there should be a clean way to catch this situation and just skip dbus-needing tests.
Edited by Philip Withnall