[project @ 2001-03-28 16:45:35 by simonmar]
Clean up GHC's error reporting - the GhcException type has some more constructors: CmdLineError, ProgramError, and InstallationError. OtherError has gone. - most error messages should begin with "<location>:". When the error is on the command-line or in GHC itself, <location> is "ghc", for consistency with std Unix semantics.