patch applied (cabal-branches/cabal-1.2): Make the ld -x test use the temp dir rather than dist dir

[Ian Lynagh]

Thu Nov  8 06:13:49 PST 2007  Duncan Coutts <duncan at haskell.org>
  * Make the ld -x test use the temp dir rather than dist dir
  Should fix cabal-install.

    M ./Distribution/Simple/GHC.hs -13 +16