[cvs-nhc98] For tracing, we need NmCoerce instances for Int/Word 8/16/32

malcolm: Fri Jan 5 19:16:51 CET 2001 Update of /usr/src/master/nhc/src/prelude/PreludeDebug In directory hinken:/tmp/cvs-serv4127 Modified Files: PreludeDebug.hs Log Message: For tracing, we need NmCoerce instances for Int/Word 8/16/32/64. For now, these are just dummy instances. Later, we need to do some sensible conversions on them for display purposes.