Use nbasis from restart file to convert det size.
Use nbasis from restart file to convert det size.

This avoids (except for backwards compatibility with an old file) the
user having to supply a system object when redistributing restart files.

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