[cvs-nhc98] Support qualified identifier names in the Haskell parts of

malcolm: Fri Nov 1 17:57:27 CET 2002 Update of /usr/src/master/nhc/src/hat/tools In directory hinken:/tmp/cvs-serv21850 Modified Files: HatObserve.hs HatTrail.hs LowLevel.hs Observe.hs Pattern.hs SExp.hs TExp.hs Log Message: Support qualified identifier names in the Haskell parts of hat-observe and hat-trail. * There is a new option ":set qualified" to choose whether to display all names qualified or not. * Qualified names are parsed in hat-observe patterns, but the C back-end machinery is not yet written to ensure that only the selected identifier is actually observed.