CORBA35 — Bidirectional Policy insufficient for persistent objects

The BidirectionalPolicy insufficient for persistent objects.

The BidirectinoalExport Policy is a POA policy and it only has two values
of ALLOW and DENY. If it is ALLOW, then a TAG_BI_DIR_GIOP componenet
should be placed in the IOR. It is stated that the ORB must generate a
random identifier when the POA is created. However, that will not work for
persistent objects in which the BiDirectional Offer must remain constant.

Also, there is no default specified if this policy is not placed on a POA,
and no default for the RootPOA.