Changes to ghc

Changes to ghc:
commit 778b48afc36e2b0eb44387e2a36947ac0c6ddd95
Author: Austin Seipp <austin@well-typed.com>
Date:   Wed Jan 15 08:35:37 2014 -0600

    s/warn-type-holes/warn-typed-holes/g

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