Changes to ghc

Changes to ghc:
commit c0270922e0ddd3de549ba7c99244faf431d0740f
Author: Simon Peyton Jones <simonpj@static.144-76-175-55.clients.your-server.de>
Date:   Thu Oct 24 03:07:26 2013 -0500

    Suppress AMP warnings with -XNoImplicitPrelude (fixed Trac #8320)

    The AMP warnings caused 'base' to be loaded even when we were
    compiling 'ghc-prim'.  That is bad, bad, bad.  We got a very
    obscure message
       attempting to use module ‛ghc-prim:GHC.Types’
         (libraries/ghc-prim/./GHC/Types.hs) which is not loaded

    See Note [Home module load error] in LoadIface