[project @ 2002-09-18 10:51:01 by simonmar]
Fix up exception handling when reading an interface file, and make it compile with 4.08.x again. GhcExceptions weren't being caught by readIface, so an error when reading an interface could be unintentionally fatal (errors should be soft when reading the old interface file for the current module). Also, the Interrupted exception should not be caught by readIface, because we want ^C to behave as normal when reading interface files (currently it causes an interface-file read error rather than interrupting the whole compiler). Some exception-related compatibility functions have been moved from Util to Panic.