message: On the fly productions default and alternative detector support
diff: @@ -1043,8 +1043,19 @@ Float_t AliCSEventCuts::GetEventCentrality(AliVEvent *event) const
  if (fgIsOnTheFlyMC) {
  /* on the fly MC production */
  + switch(fCentralityDetector) {
  + case 0:
  + /* default centrality detector */
  /* multiplicity / centrality percentile already stored */
  return fV0MCentrality;
  + case 1:
  + /* alternative centrality detector */
  + /* multiplicity / centrality percentile already stored */
  + return fCL1Centrality;
  + default:
  + AliError("Wrong stored centrality detector");
  + return -1.0;
  + }
  }
  if (esdEvent != NULL) {
  @@ -1235,8 +1246,19 @@ Float_t AliCSEventCuts::GetEventAltCentrality(AliVEvent *event) const
  if (fgIsOnTheFlyMC) {
  /* on the fly MC production */
  + switch(fCentralityDetector) {
  + case 0:
  + /* default centrality detector */
  /* multiplicity / centrality percentile already stored */
  return fCL1Centrality;
  + case 1:
  + /* alternative centrality detector */
  + /* multiplicity / centrality percentile already stored */
  + return fV0MCentrality;
  + default:
  + AliError("Wrong stored centrality detector");
  + return -1.0;
  + }
  }
  if (esdEvent != NULL) {
  