[cvs-nhc98] Hat-trans: added / improved error messages for faulty inpu

olaf: Tue Jun 11 12:41:22 CEST 2002 Update of /usr/src/master/nhc/src/compiler98 In directory hinken:/tmp/cvs-serv21425/src/compiler98 Modified Files: AuxFile.hs AuxLabelAST.hs Makefile TraceTrans.hs Log Message: Hat-trans: added / improved error messages for faulty input module. This also removes the following bug: 3. hat-trans suffers a pattern-match failure if the source program has an empty import list Actually the pattern-match failure had nothing to do with an empty import list. It occurred when a data constructor that was not in scope occurred in a pattern.