[cvs-nhc98] Change internal IOError representation completely.

[Malcolm Wallace]

malcolm: Thu Mar 29 23:02:00 CEST 2001

Update of /usr/src/master/nhc/src/prelude/PreludeIO
In directory hinken:/tmp/cvs-serv18806/prelude/PreludeIO

Modified Files:
	DIOError.hs Eq_IOError.hs Monad_IO.hs Show_IOError.hs 
	UserError.hs 
Log Message:
Change internal IOError representation completely.
  (Remove obsolete constructors, add more information fields
   to the remaining ones, and improve the printing routines.)
This necessitates corresponding changes in many IO functions.