SEC14 — Current:get_policy() is semanitically insconsitent with curr. object mode

Summary: The model currently specifies that _set_policy_overrides(), and
get_policy() apply to the particular object reference.

That would mean that the policies applied to accessing Current.
I suggest that we aliviate this discrepancy by putting a
CORBA::PolicyManager get_policy_manager() on the Current interface.
The PolicyManager is currently part of the new Async Messaging Specification
and would be a good interface to do this with.