activate fails if rmid is restarted

In the current implementation of rmid, the ActivationSystem does not have a
well-known ObjID. An ActivationGroupID contains a reference to an
ActivationSystem and this reference must be the same from run to run of rmid
or the group will not be able to contact its activation system after rmid is
restarted since the ObjID of the ActivationSystem will change. The group
contacts the activation system referred to in its ActivationGroupID to indicate that the group is active. This call to ActivationSystem.activeGroup will fail
since the activation system does not have the previously assigned ObjID.