[cvs-nhc98] Hat: add dummy defn for mkNTRational

malcolm: Fri Feb 23 20:12:24 CET 2001 Update of /usr/src/master/nhc/src/prelude/PreludeDebug In directory hinken:/tmp/cvs-serv14349 Modified Files: HatArchive.hs Log Message: Hat: add dummy defn for mkNTRational