A new fixes to finish generalizing the ledafits.py module for LEDA64-NM.  These changes include adding attributes to LedaFits to store the site information and the cable lengths.  Updated the LEDA64-NM configuration to store the STABXYZ values in ECI coordinates, rather than topocentric.  Changed the pointing methods in the LedaFits class to use the new stored site information and ECI coordinates.