Changes to ghc

Changes to ghc:
commit 559ae1e8b6e0229070d371cb90b23655b70e1b77
Author: Austin Seipp <austin@well-typed.com>
Date:   Tue Jun 17 17:09:02 2014 -0500

    Revert "Fix obscure problem with using the system linker (#8935)"

    This reverts commit 72bd832eb87975c504654a65f9c88daaa478f677.

    Signed-off-by: Austin Seipp <austin@well-typed.com>