SSDM-3625: Dive into directories only if they are not symbolic links.

SVN: 36538

datastore_server/source/java/ch/systemsx/cisd/etlserver/plugins/HierarchicalStorageUpdater.java

@@ -338,7 +338,7 @@ public class HierarchicalStorageUpdater implements IDataStoreLockingMaintenanceT
 
     private void deleteWithSymbolicLinks(File toDelete)
     {
-        if (toDelete.isDirectory())
+        if (FileUtilities.isSymbolicLink(toDelete) == false && toDelete.isDirectory())
         {
             for (File file : toDelete.listFiles())
             {