DGC on Client's side - it's responsible for renewing/cancelling
remote objects leases.
It is made package protected for security reasons.
author: Mikhail A.
Manager controlling all exported objects.
It is put to org.apache.harmony.rmi.transport package because some methods
should be made package protected.
author: Mikhail A.
Base class for all RemoteRef implementations.
It belongs to org.apache.harmony.rmi.transport package because it should have
package protected access to ClientDGC implementation.
author: Mikhail A.
Defines structure for storing RMIObjects and methods for finding them by
different separate keys, which are unique inside the table: ObjID and
RMIReference to the object's implementation.
author: Mikhail A.