patch applied (ghc-6.6/packages/base): Don' t use Fd/FD in foreign decls

[Ian Lynagh]

Wed Apr  4 09:43:05 PDT 2007  Ian Lynagh <igloo at earth.li>
  * Don't use Fd/FD in foreign decls
  Using CInt makes it much easier to verify that it is right, and we won't
  get caught out by possible newtype switches between CInt/Int.

    M ./Data/ByteString/Base.hs -1 +1
    M ./GHC/Conc.lhs -4 +16
    M ./GHC/Handle.hs -9 +9
    M ./GHC/IO.hs -1 +1