[jvstm-ojb] New Feature: Server Id leases
[jvstm-ojb] OID generation is now done only by ensureIdInternal

  * This is to be removed in the future, once idInternals are removed,
    and OIDs being generated by ensureOid.
  * This prevents running both ensureOid and ensureIdInternal
[jvstm-ojb] Added deprecated getOID method to the AbstractDomainObject
Merge pull request #116 from jcarvalho/feature/server-id

[jvstm-ojb] Assign Unique Server Id to each running instance