patch applied (packages/Cabal): Modules that use cpp have to have cpp language prama to say so

[Ian Lynagh]

Wed May 14 01:29:13 PDT 2008  Duncan Coutts <duncan at haskell.org>
  * Modules that use cpp have to have cpp language prama to say so
  Otherwise we cannot compile with just ghc --make
  which is actually essential for bootstrapping.

    M ./Distribution/PackageDescription/Configuration.hs +6
    M ./Distribution/Simple/PackageIndex.hs +6

View patch online:
http://darcs.haskell.org/packages/Cabal/_darcs/patches/20080514082913-adfee-f891e927199e85f80a3ab58fe29314489bc8ffc5.gz