Changes to ghc

Changes to ghc:
commit a3831391e1defdf69214dc258eebcf37d92991f2
Author: Austin Seipp <austin@well-typed.com>
Date:   Mon Apr 21 22:10:05 2014 -0500

    ghc & docs: kill unused flags

    This removes the following, now defunct flags, which will not be
    recognized by GHC 7.10:

      -fwarn-lazy-unlifted-bindings
      -pgmm and -optm (used for the Mangler, long dead)
      -keep-raw-s-file & -keep-raw-s-files
      -monly[432]-reg-only

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