patch applied (ghc): Use CoreSubst.simpleOptExpr in place of the ad-hoc simpleSubst (reduces code too)

[Simon Peyton Jones]

Mon Dec  8 09:30:18 PST 2008  simonpj at microsoft.com
  * Use CoreSubst.simpleOptExpr in place of the ad-hoc simpleSubst (reduces code too)

    M ./compiler/deSugar/DsBinds.lhs -50 +16

View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20081208173018-1287e-4ed0a982ba1c0c0134dcf0a4bc168bcc8c491a73.gz