OPENDJ-1716 Various PluggableBackend/Storage refactorings

Jean-Noel Rouvignac

10.52.2015 31800ebec07ed86012e0aeb5a934f752975e8ea4

 opendj3-server-dev/src/server/org/opends/server/tools/BackUpDB.java

@@ -964,10 +964,9 @@
      backupConfig.setSignHash(signHash.isPresent());
      backupConfig.setIncrementalBaseID(incrementalBase);

      StringBuilder unsupportedReason = new StringBuilder();
      if (! b.supportsBackup(backupConfig, unsupportedReason))
      if (!b.supportsBackup())
      {
        logger.error(ERR_BACKUPDB_CANNOT_BACKUP, b.getBackendID(), unsupportedReason);
        logger.error(ERR_BACKUPDB_CANNOT_BACKUP, b.getBackendID());
        errorsEncountered = true;

        try