patch applied (cabal): Add --enable-shared as configure argument, and ghc-shared-options as .cabal field

[Clemens Fruhwirth]

Fri Aug 24 07:11:40 PDT 2007  Clemens Fruhwirth <clemens at endorphin.org>
  * Add --enable-shared as configure argument, and ghc-shared-options as .cabal field

    M ./Distribution/PackageDescription.hs -2 +7
    M ./Distribution/Setup.hs +9
    M ./Distribution/Simple/Configure.hs -10 +11
    M ./Distribution/Simple/LocalBuildInfo.hs +1
    M ./doc/Cabal.xml +30