patch applied (ghc-7.0/ghc): Define setIdUnfoldingLazily, and use it in Vectorise

[Ian Lynagh]

Tue Oct 19 13:15:37 PDT 2010  Ian Lynagh <igloo at earth.li>
  * Define setIdUnfoldingLazily, and use it in Vectorise
  Fixes a loop in the compiler, when running the dph tests

    M ./compiler/basicTypes/Id.lhs -1 +6
    M ./compiler/vectorise/Vectorise.hs -1 +1

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=ghc-7.0/ghc;a=darcs_commitdiff;h=20101019201537-3fd76-714cbd592b1f1a1cbb6145aed04983baf034d264.gz