WCSim Validation

c750a694e10a41af0b343f2e477266dfe1521e5b

Pull Request #520: Update LI code, better sampling

HKFDOD_500MeVem_centre_xdir

Tests
10031.81 sec
wcsimrootevent plot pass
wcsimrootevent2 plot pass
wcsimrootevent_OD plot pass
Geom pass
bad pass
Geometry warnings pass