patch applied (packages/base): Remove redundant imports of GHC.Err

[Simon Peyton Jones]

Fri Jan  4 01:13:14 PST 2008  simonpj at microsoft.com
  * Remove redundant imports of GHC.Err
  
  GHC.Base SOURCE-imports GHC.Err, and re-exports 'error'.  So 
  other modules need only import GHC.Base.
  
  This doesn't change the fact that these other modules are all compiled
  before GHC.Err, so they are all part of the module loop that starts with
  GHC.Base and finishes with GHC.Err.  But it does reduce the occurrence
  of those SOURCE imports.
  

    M ./Data/Maybe.hs -1
    M ./GHC/Arr.lhs -1
    M ./GHC/Int.hs -1
    M ./GHC/List.lhs -1
    M ./GHC/Num.lhs -1
    M ./GHC/Read.lhs -1
    M ./GHC/Real.lhs -1
    M ./GHC/Word.hs -1