WCSim Validation

c73065d662e499bd6db7a4d91389433382976655

Pull Request #529: Make LI generator work with old C++ standard

IWCD_500MeVem_centre_xdir

Tests
2600.87 sec
wcsimrootevent plot pass
wcsimrootevent2 plot pass
wcsimrootevent_OD plot pass
Geom pass
bad pass
Geometry warnings pass