[cvs-nhc98] Added functions to HatTrace and HatExpressionTree, which

thorsten: Tue Sep 18 19:22:01 CEST 2001 Update of /usr/src/master/nhc/src/tracer/hat In directory hinken:/tmp/cvs-serv26442 Modified Files: HatExpressionTree.hs HatTrace.gc Hatobserve.hs hatinterface.c Log Message: Added functions to HatTrace and HatExpressionTree, which previously wouldn't compile with NHC due to type-checking-bug. - HatLimit introduced, allowing to derive trees of limited depth from any HatRep class instance.