message: Add option IgnoreDefaultContainerNames to skip prefixing
  if the container is not explicitly named
diff: @@ -1084,6 +1084,10 @@ Int_t ProcessOptionString(TString arguments, Bool_t verbose)
  {
  fFullyDestroyAnalysisDataContainer = (value.Contains("0"))?kFALSE:kTRUE;
  }
  + else if (option.EqualTo("IgnoreDefaultContainerNames"))
  + {
  + fIgnoreDefaultNamesWhenUnpacking = (value.Contains("0"))?kFALSE:kTRUE;
  + }
  else if (option.EqualTo("statefile"))
  {
  fInitFile = value.Data();
  