message: Adding Event header name
  needed for T0 digitization task
diff: #include <TClonesArray.h>
  //#include "AliRun.h"
  +#include "AliGenEventHeader.h"
  #include "AliGenDRgen.h"
  #include "TDRgen.h"
  #include "DRGENcommon.h"
  @@ -192,6 +193,12 @@ void AliGenDRgen::Generate()
  Info("Generate","Event %d\n",fEvent);
  fTDRgen->Finish();
  }
  +
  + // Make header
  + AliGenEventHeader* header = new AliGenEventHeader("DRgen");
  +
  + // Pass header
  + AddHeader(header);
  }
  //____________________________________________________________
  