message: fix AddTaskZDCGainEq for multiple wagon
diff: #include<TList.h>
  - void AddTaskZDCGainEq(Double_t dcentrMin=0, Double_t dcentrMax=90, Int_t iVxBin=5,Int_t iVyBin=5,Int_t iVzBin=10,
  + AliAnalysisTaskZDCGainEq* AddTaskZDCGainEq(Double_t dcentrMin=0, Double_t dcentrMax=90, Int_t iVxBin=5,Int_t iVyBin=5,Int_t iVzBin=10,
  TString sAnalysisFile = "AOD", TString sDataSet = "2010", TString sAnalysisDef = "recenter1",
  TString sAnalysisType = "AUTOMATIC", TString sEventTrigger = "MB", Bool_t bEventCutsQA = kFALSE, Bool_t bTrackCutsQA = kFALSE,
  Bool_t bUseVZERO = kTRUE, Bool_t bPileUp = kFALSE, Bool_t bPileUpTight = kFALSE, Double_t dVertexRange = 10.,
  AliAnalysisDataContainer *coutputSP2 = mgr->CreateContainer(fZDCCont2,TList::Class(),AliAnalysisManager::kOutputContainer,outputSP.Data());
  mgr->ConnectOutput(taskQC_prot, 2, coutputSP2);
  - if(!mgr->InitAnalysis()) // check if we can initialize the manager
  - {
  - printf("\n\n Rihan, your analysis manager is not set correctly. \n Check AddTaskMacro.C \n\n");
  - return;
  - }
  -
  - printf("\n ... AddTaskVnZDC called succesfully .... \n");
  + //if(!mgr->InitAnalysis()) // check if we can initialize the manager
  + //{
  + // return;
  + //}
  - return;
  + return taskQC_prot;
  }//main ends
  