Changes to ghc(3)

Changes to ghc:
commit 0757831eaca96c8ebfd99fc51427560d3568cffa
Author: Simon Peyton Jones <simonpj@microsoft.com>
Date:   Tue Jun 24 13:24:36 2014 +0100

    Add Note [Placeholder PatSyn kinds] in TcBinds

    This is just documentation for the fix to Trac #9161

commit 8a0aa198f78cac1ca8d0695bd711778e8ad086aa
Author: Simon Peyton Jones <simonpj@microsoft.com>
Date:   Mon Jun 23 17:37:56 2014 +0100

    Comment the expect_broken for Trac #9208

commit 761c4b15ec93d5494d0990f9a7ac58dc5da44b3c
Author: Simon Peyton Jones <simonpj@microsoft.com>
Date:   Mon Jun 23 17:16:48 2014 +0100

    Minor refactoring of interface to extraTyVarInfo