Calculate single-particle eigenvalues when not in FCIDUMP
Calculate single-particle eigenvalues when not in FCIDUMP

I got an error message that asked me to and it would be churlish to refuse.

More seriously, HORTON does not include the single-particle eigenvalues
(and it's the only program to generate FCIDUMPs that I can get to work
on my laptop!)

ruthfranklin/hande,hande-qmc/hande,hande-qmc/hande,hande-qmc/hande,hande-qmc/hande,hande-qmc/hande