Changes to ghc

Changes to ghc:
commit 396648eebaa1144d4d1f5326db716e8130f73732
Author: Simon Marlow <marlowsd@gmail.com>
Date:   Tue Apr 8 10:21:27 2014 +0100

    Don't preprocess .s files

    One important reason is that gcc 4.8.1 sometimes crashes:

      http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60436

    Another reason is that preprocessing assembly files unnecessarily
    slows down compilation.