Replace unsupported by udunits "psu" unit on "1e-3"

src/CF.cpp

@@ -442,6 +442,7 @@ Error CF::FillAdapterFromCF(const CLArgs& args, michlib_internal::ParameterListE
       },
       pnc->VarFill(v));
 
+  if(vinfo->unit == "psu") vinfo->unit = "1e-3"; // Deal with salinity psu
   vinfo->targetunit = vinfo->unit;
   if(vinfo->stname.SubStr(vinfo->stname.Len() - 7, 8) == "velocity") vinfo->targetunit = "cm/s";