[cvs-nhc98] Update Read/Show instances of Ratio to the latest revision

malcolm: Wed Aug 7 14:41:41 CEST 2002 Update of /usr/src/master/nhc/src/prelude/Ratio In directory hinken:/tmp/cvs-serv17196 Modified Files: Read_Ratio.hs Show_Ratio.hs Log Message: Update Read/Show instances of Ratio to the latest revision of the Report.