Added 3 new policy classes to support single-owner smart pointers.  Fixed 2 obscure bugs in TwoRefLinks policy.
Added 3 new policy classes to support single-owner smart
pointers.  Fixed 2 obscure bugs in TwoRefLinks policy.

git-svn-id: e2e1a767b54e5f731ad8ac18fa5089ee37d5625a@1080 7ec92016-0320-0410-acc4-a06ded1c099a

claudiordgz/Loki,claudiordgz/Loki,claudiordgz/Loki