Changes to ghc

Changes to ghc:
commit a107737f84f6738a9fa572ec9c5da49c9db8a8b5
Author: Joachim Breitner <mail@joachim-breitner.de>
Date:   Tue Apr 15 15:33:39 2014 +0200

    s/FromList/isList in docs

    This was reported by David Virebayre on haskell-cafe.