WCSim Validation

eec6a11d9030c321b9d084d79f3c54179baef81e

Pull Request #551: Compatibility update for neut5.6.4

SK_5MeVem_centre_xdir

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