patch applied (cabal): If we are using ghc as hsc2hs's cc, then tell it where package.conf is

[Ian Lynagh]

Sun Jul 13 04:05:48 PDT 2008  Ian Lynagh <igloo at earth.li>
  * If we are using ghc as hsc2hs's cc, then tell it where package.conf is
  if we have been told to use a specific one with --package-db

    M ./Distribution/Simple/PreProcess.hs -1 +8

View patch online:
http://darcs.haskell.org/cabal/_darcs/patches/20080713110548-3fd76-7f0018b70c7167f2812207f2595e1f55f1d4d23f.gz