patch applied (ghc): Use a Var instead of a CoreExpr as the lifting context during vectorisation

[Roman Leshchinskiy]

Mon Jul 30 23:16:10 PDT 2007  Roman Leshchinskiy <rl at cse.unsw.edu.au>
  * Use a Var instead of a CoreExpr as the lifting context during vectorisation

    M ./compiler/vectorise/Vectorise.hs -11 +11