Update to latest Release-150
  Geometry calculations broken into separate method so
  that we don't have to read db_run.dat
Get spectrometer angle and momentum for Hall C style parameters
  Parameters are retrieved in THcHallCSpectrometer::ReadDatabase
  Geometry information saved with
     SetCentralAngles and fPointOffset.SetXYX
Fix bug in SOS small angle LR approx

Should compare (pindex1%2), not pindex1, to determine evenness.