[cvs-nhc98] Add Haskell pretty printer to hat-detect and hat-observe.

olaf: Fri Sep 21 12:00:05 CEST 2001 Update of /usr/src/master/nhc/src/tracer/hat In directory hinken:/tmp/cvs-serv6925/src/tracer/hat Modified Files: HatExpressionTree.hs Hatdetect.hs Hatobserve.hs Makefile Added Files: PrettyExp.hs PrettyLib.hs Log Message: Add Haskell pretty printer to hat-detect and hat-observe. Very large output that cannot fit into given width is still a problem, everything is broken down and indentation can exceed several lines.