Changes to ghc

Changes to ghc:
commit d1712dbd2b4c5d23a60d8a369e17045a397bf4f5
Author: Arash Rouhani <rarash@student.chalmers.se>
Date:   Thu Dec 26 14:57:35 2013 +0100

    In rts/Printer.c, print exact UPDATE_FRAME type

    When printing an update frame in printClosure(), it will not print
    the unspecific UPDATE_FRAME, instead it prints BH_UPDATE_FRAME,
    NORMAL_UPDATE_FRAME or MARKED_UPDATE_FRAME.

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