AST-1111 Clean up ItrfConverter; Remove coordutils.h; Increase minor version
Remove unused (and untested) functions. Perform ra/dec to ITRF in new RaDecToItrf function. Use Google Style for ItrfConverter.
Remove unused (and untested) functions. Perform ra/dec to ITRF in new RaDecToItrf function. Use Google Style for ItrfConverter.