Changes to ghc

Changes to ghc:
commit 441d1b995fd269d39b40845b6904ecc0c5aac844
Author: Herbert Valerio Riedel <hvr@gnu.org>
Date:   Fri Jul 11 19:36:26 2014 +0200

    Declare official github home of libraries/unix

    Effective immediately, pushing to libraries/unix requires pushing to
    ssh://git@github.com/haskell/unix.git. This done now even though there's
    no scripted tooling yet as the GitHub repo is already receiving pull requests
    (which are getting merged)