OPENDJ-1116 Introduce abstraction for the changelog DB

Matthew Swift

07.53.2013 984ba7b145520f02414eedf36b88946172ef4dd3

 opends/src/server/org/opends/server/replication/server/ReplicationServerDomain.java

@@ -2619,12 +2619,13 @@
      }

      if (changelogNewestCSN != null
          && (eligibleCSN == null || changelogNewestCSN.newer(eligibleCSN)))
          && (eligibleCSN == null ||
              changelogNewestCSN.isNewerThan(eligibleCSN)))
      {
        eligibleCSN = changelogNewestCSN;
      }
      if (heartbeatLastCSN != null
          && (eligibleCSN == null || heartbeatLastCSN.newer(eligibleCSN)))
          && (eligibleCSN == null || heartbeatLastCSN.isNewerThan(eligibleCSN)))
      {
        eligibleCSN = heartbeatLastCSN;
      }