patch applied (cabal): Fix linking with hsc2hs on OS X

[Ian Lynagh]

Tue Jul 29 10:02:15 PDT 2008  Ian Lynagh <igloo at earth.li>
  * Fix linking with hsc2hs on OS X
  We don't tell hsc2hs to link the actual Haskell packages, so with GHC's
  rts package we need to also filter out the -u flags.

    M ./Distribution/Simple/PreProcess.hs -2 +11

View patch online:
http://darcs.haskell.org/cabal/_darcs/patches/20080729170215-3fd76-cc5ed86eafd9077164d5dd73f8884318f87e6b6d.gz