OPENDJ-2349: fix deadlocks during subtree deletes and moddn

Matthew Swift

26.22.2015 f09c069e92d051036af2a969fe5289cb7c4826ba

 opendj-server-legacy/src/main/java/org/opends/server/backends/pdb/PDBStorage.java

@@ -177,6 +177,20 @@
    }

    @Override
    public void delete()
    {
      throwIfUndefined();
      try
      {
        exchange.remove();
      }
      catch (final PersistitException e)
      {
        throw new StorageRuntimeException(e);
      }
    }

    @Override
    public boolean positionToKey(final ByteSequence key)
    {
      clearCurrentKeyAndValue();