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

[User olaf]

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.