Changes to ghc

Changes to ghc:
commit 3fd7f543efe977de6f3cce9fcdfdad8b6825f948
Author: Simon Peyton Jones <simonpj@microsoft.com>
Date:   Wed May 14 00:15:48 2014 +0100

    Wibble to 4cfc1fae

    isSynTyCon is true of type *family* TyCons, which *are* allowed
    in TyConAppCo