patch applied (ghc): Use a proper exception for IOEnvFailure, not just a UserError

[Ian Lynagh]

Fri Oct  3 09:01:29 PDT 2008  Ian Lynagh <igloo at earth.li>
  * Use a proper exception for IOEnvFailure, not just a UserError

    M ./compiler/ghc.cabal.in -1 +2
    M ./compiler/typecheck/TcRnMonad.lhs -2 +1
    M ./compiler/typecheck/TcSplice.lhs -11 +4
    M ./compiler/utils/IOEnv.hs -3 +14
    M ./compiler/utils/Panic.lhs -17 +1

View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20081003160129-3fd76-09799406eb947d7304dfd68a07a393244b9f4175.gz