[cvs-nhc98] In hat-explore, write all errors to stderr.

[Malcolm Wallace]

malcolm: Fri Feb 15 16:39:34 CET 2002

Update of /usr/src/master/nhc/src/hat/tools
In directory hinken:/tmp/cvs-serv7308

Modified Files:
	SExp.hs 
Log Message:
In hat-explore, write all errors to stderr.
Fix a bug where the function in an application is a null file pointer
Fix a pattern-match failure when traversing a comma-separated list.
Fix an incorrect lack of parentheses when an application goes through a
  projection.