patch applied (ghc): Fix bug relating to the return values of prim ops

[Simon Marlow]

Tue Jun 26 12:23:52 PDT 2007  Michael D. Adams <t-madams at microsoft.com>
  * Fix bug relating to the return values of prim ops
  The return values were getting put in a LocalReg
  but that LocalReg needed to be stored into the enclosing
  expression's return register (e.g. R1).

    M ./compiler/codeGen/CgExpr.lhs -1 +1