message: fix for root6 trains
diff: +#if defined(__CLING__)
  +#include "AliMultiplictyLoaderTask.h"
  +#endif
  +
  AliMultiplictyLoaderTask* AddAliMultiplictyLoaderTask(Bool_t useAliPPVsMultUtils=kTRUE, TString cent="V0M")
  {
  AliAnalysisManager *mgr = AliAnalysisManager::GetAnalysisManager();
  