Changes to ghc

Changes to ghc:
commit 95854ca5276e3f4063ade7fe3a934bed46648270
Author: Christopher Rodrigues <cirodrig@illinois.edu>
Date:   Fri Nov 29 23:05:50 2013 -0600

    Use new flushExec implementation on all operating systems (#8562)

    An earlier patch fixes a bug in flushExec on linux only.  This
    patch uses the fixed code on all operating systems.

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