patch applied (packages/base): Temporarily fix breakage for nhc98.

[Malcolm Wallace]

Wed Aug  1 09:37:50 PDT 2007  Malcolm.Wallace at cs.york.ac.uk
  * Temporarily fix breakage for nhc98.
  A recent patch to System.IO introduced a cyclic dependency on Foreign.C.Error,
  and also inadvertently dragged along System.Posix.Internals which has
  non-H'98 layout, causing many build problems.  The solution for now
  is to #ifndef __NHC__ all of the recent the openTempFile additions,
  and mark them non-portable once again.  (I also took the opportunity
  to note a number of other non-portable functions in their Haddock
  comments.)

    M ./System/IO.hs -3 +9