Changes to ghc

Changes to ghc:
commit abb86adf7f749b3d44887d28bc96b43c5a1e0631
Author: Ben Gamari <bgamari.foss@gmail.com>
Date:   Thu Mar 6 21:22:28 2014 +0100

    config.mk.in: ARM now supports dynamic linking with the LLVM backend

    Signed-off-by: Austin Seipp <austin@well-typed.com>
    (cherry picked from commit d574fcbba09fd6c9d10a79e19daf5f15bb0a6cde)