Original patch attached to the bug report has been modified to avoid the
dbus queue on bus name request when --replace is specified.
D-Bus has a flag to avoid this, which is DBUS_NAME_FLAG_DO_NOT_QUEUE. No
equivalent in gdbus, but using always the flag for the name request to
G_BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT |
G_BUS_NAME_OWNER_FLAGS_REPLACE, has the same effect and bus does not
queue us waiting for the current owner to unown the name.