message: Added a getter for the main histogram directory
diff: @@ -73,6 +73,7 @@ class AliHistogramManager : public TObject {
  void AddToOutputList(TList* list) {fOutputList.Add(list);}
  void CloseFile();
  const THashList* GetMainHistogramList() const {return &fMainList;} // get a histogram list
  + const THashList* GetMainDirectory() const {return fMainDirectory;} // get the main histogram list from the loaded file
  THashList* AddHistogramsToOutputList(); // get all histograms on a THashList
  THashList* GetHistogramOutputList() {return &fOutputList;}
  THashList* GetHistogramList(const Char_t* listname) const; // get a histogram list
  