patch applied (packages/Cabal): It is no longer necessary to run ' configure' before ' clean' or ' sdist' , addressing http://haskell.galois.com/trac/hackage/ticket/12.

[Isaac Jones]

Mon Apr  3 22:41:27 PDT 2006  Nick Alexander <ncalexan at uci.edu>
  * It is no longer necessary to run 'configure' before 'clean' or 'sdist', addressing http://haskell.galois.com/trac/hackage/ticket/12.
  In order to change this behaviour, it was necessary to modify the hook interface, specifically cleanHook, postClean, sDistHook, postSDist.  They now take a Maybe LocalBuildInfo, since a LocalBuildInfo might not be available in .setup-config.

    M ./Distribution/Simple.hs -23 +24
    M ./Distribution/Simple/Configure.hs -5 +16