WCSim Validation

9e35d47677ebf73140f35363990b317010dbe88c

Pull Request #526: New optical process for Raman scattering

HKFD_500MeVem_centre_xdir

Tests
9914.76 sec
wcsimrootevent plot pass
wcsimrootevent2 plot pass
wcsimrootevent_OD plot pass
Geom pass
bad pass
Geometry warnings pass