WCSim Validation

44aca2687631b9df467c82e82e84c07f20dffd2d

Pull Request #558: separate tyvek reflectivities

HKFDOD_500MeVem_centre_xdir

Tests
9119.03 sec
wcsimrootevent plot pass
wcsimrootevent2 plot pass
wcsimrootevent_OD plot pass
Geom pass
bad pass
Geometry warnings pass