provide tof v21a geometry

Update CBM TOF geometry to version v21a for Online TDR with latest version of inner wall, The number of module types is increased to 15 requiring an update of CbmTofGeoHandler which is backward compatible. The merge request is accompanied with 2 others for the geometry and the parameter file.

core/detectors/tof/CbmTofDigiBdfPar.cxx

@@ -193,7 +193,7 @@ Bool_t CbmTofDigiBdfPar::getParams(FairParamList* l)
                    << " not found in the text file. "
                    << "This is normal for geometries < 14a but may indicate file "
                       "corruption "
-                   << " for newer geometries. Values are set to default 0.0 cm/ps.";
+                   << " for newer geometries. Values are set to default 0.0 cm/ns.";
       for (Int_t iRpc = 0; iRpc < fiNbRpc[iSmType]; iRpc++)
         fdSigVel[iSmType].SetAt(0.0, iRpc);
       //return kFALSE;
@@ -728,7 +728,7 @@ void CbmTofDigiBdfPar::printParams()
     sRpcNb += Form("%3d ", GetNbRpc(iSmType));
     sGapsNb[iSmType]     = Form("  Nb of Gaps in SM type    %3d:|->  ", iSmType);
     sGapsSz[iSmType]     = Form("  Gap Size(mm) in SM type  %3d:|-> ", iSmType);
-    sSigVel[iSmType]     = Form("  SigVel(cm/ps) in SM type %3d:|-> ", iSmType);
+    sSigVel[iSmType]     = Form("  SigVel(cm/ns) in SM type %3d:|-> ", iSmType);
     sChNb[iSmType]       = Form("  Nb of Chan in SM type    %3d:|->  ", iSmType);
     sChType[iSmType]     = Form("  Chan Type in SM type     %3d:|->  ", iSmType);
     sChOrient[iSmType]   = Form("  Chan Orientation in SM type  %3d:|->  ", iSmType);