patch applied (cabal-install): Fix for marking reverse deps of failed packages

[Duncan Coutts]

Wed Jun  4 05:52:17 PDT 2008  Duncan Coutts <duncan at haskell.org>
  * Fix for marking reverse deps of failed packages
  The reverse deps may have already failed due to depending on another
  failed package. So do not assume all reverse deps are in the
  configured state. If they are in the failed state then ignore them.

    M ./Hackage/InstallPlan.hs -4 +13

View patch online:
http://darcs.haskell.org/cabal-install/_darcs/patches/20080604125217-adfee-c5ef791b1c3c03735135bbd09c5874e66a0b770c.gz