Changes to ghc(2)

Changes to ghc:
commit 31dd5e5db965fa9ed30ac5b58514668f92843c01
Author: Austin Seipp <austin@well-typed.com>
Date:   Sun Apr 20 16:55:14 2014 -0500

    testsuite/spec001: untabify, kill trailing whitespace

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

commit 3608f657d55b7ea7dd711556a4faf6a15c509163
Author: Austin Seipp <austin@well-typed.com>
Date:   Sun Apr 20 01:10:15 2014 -0500

    Deprecate the AMP warnings.

    Now that we're in development mode, Applicative will soon be a
    superclass of Monad in HEAD. So let's go ahead and deprecate the
    -fno-warn-amp flag, remove the checks, and tweak a few tests

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