message: allows to read in optimized priors for PID
diff: * Author: The ALICE Off-line Project. *
  * Contributors are mentioned in the code where appropriate. *
  * *
  -* Permission to use, copy, modify and distribute this software and its *
  +* Permission to use, copy, modify and distribute this AliAnalysisTaskCEP.cxxsoftware and its *
  * documentation strictly for non-commercial purposes is hereby granted *
  * without fee, provided that the above copyright notice appears in all *
  * copies and that both the copyright notice and this permission notice *
  #include <TObject.h>
  #include <TRandom3.h>
  +#include "TGrid.h"
  #include "AliAnalysisManager.h"
  #include "AliProdInfo.h"
  #include "AliESDInputHandler.h"
  @@ -351,7 +352,7 @@ void AliAnalysisTaskCEP::UserCreateOutputObjects()
  // three types of Bayes PID
  // 1. without priors
  // 2. with default TPC priors
  - // 3. with CEP priors
  + // 3. with own priors
  fPIDCombined1 = new AliPIDCombined;
  fPIDCombined1->SetSelectedSpecies(AliPID::kSPECIES); // This is default
  @@ -369,17 +370,11 @@ void AliAnalysisTaskCEP::UserCreateOutputObjects()
  } else {
  - // 3. set CEP specific priors
  - //TString fnameMyPriors = TString(gSystem->Getenv("ALICE_PHYSICS"))+
  - // TString("/PWGUD/DIFFRACTIVE/CEPdevel/priors/");
  -
  - // MC truth
  - //fnameMyPriors += TString("MCTruth_CEPPriors.root");
  -
  - // Pythia8CEP
  - //fnameMyPriors += TString("Pythia8CEP_CEPPriors.root");
  + // specific priors
  + TGrid::Connect("alien://");
  TString fnameMyPriors =
  - TString("alien:/alice/cern.ch/user/p/pbuhler/CEP/priors/Pythia8CEP_CEPPriors.root");
  + TString("alien:///alice/cern.ch/user/p/pbuhler/CEP/priors/");
  + fnameMyPriors += TString("MyOwnPriors.root");
  TH1F *priordistr[AliPID::kSPECIES];
  fCEPUtil->GetMyPriors(fnameMyPriors,priordistr);
  