[cvs-nhc98] Add explicit functions numericEnumFromTo and numericEnumFr

malcolm: Tue Oct 22 13:17:31 CEST 2002 Update of /usr/src/master/nhc/src/prelude/Prelude In directory hinken:/tmp/cvs-serv17778/Prelude Modified Files: NumericEnumFrom.hs NumericEnumFromThen.hs Log Message: Add explicit functions numericEnumFromTo and numericEnumFromThenTo, and change instance Enum (Ratio a) to use them.