patch applied (ghc-fc2): Fix problem with selectors for GADT records with unboxed fields

[chak at cse.unsw.edu.au]

Sun Aug  6 17:47:11 PDT 2006  Manuel M T Chakravarty <chak at cse.unsw.edu.au>
  * Fix problem with selectors for GADT records with unboxed fields
  Wed Aug  2 05:37:38 EDT 2006  kevind at bu.edu

    M ./compiler/basicTypes/MkId.lhs -2 +2
    M ./compiler/coreSyn/CoreUtils.lhs -11 +17
    M ./compiler/iface/TcIface.lhs -1 +1
    M ./compiler/simplCore/Simplify.lhs -2 +2