Fix CInterface.toCchar and fromCchar. They had not been changed for the change in string representation.
Fix CInterface.toCchar and fromCchar.
They had not been changed for the change in string representation.

dcjm/polyml,polyml/polyml,polyml/polyml,polyml/polyml,polyml/polyml,dcjm/polyml,dcjm/polyml,dcjm/polyml