patch applied (cabal): Use accurate per-component package deps

[Duncan Coutts]

Sat May 30 13:23:50 PDT 2009  Duncan Coutts <duncan at haskell.org>
  * Use accurate per-component package deps
  Based on an original patch by Stephen Blackheath
  Previously each component got built using the union of all package
  deps of all components in the entire package. Now we use exactly the
  deps specified for that component. To prevent breaking old packages
  that rely on the sloppy behaviour, package will only get the new
  behaviour if they specify they need at least cabal-version: >= 1.7.1

    M ./Distribution/Simple/Configure.hs -8 +42

View patch online:
http://darcs.haskell.org/cabal/_darcs/patches/20090530202350-adfee-01db53973d93096aae0456a6b27411c9cc78129b.gz