[cvs-nhc98] cvs commit: hat/src/hattools Detect.hs EDT.hs Explore.hs HatAnim.hs HatDelta.hs HatDetect.hs HatExplore.hs Makefile NodeExp.hs Pretty.hs PrettyHat.hs SExp.hs Set.hs VSExp.hs detectutils.c