Patch merged into coreboot/master: 113a366 Add GRUB2 payload to build system

the following patch was just integrated into master:
commit 113a3668489507f5b14ccea4daae0216021bf228
Author: Vladimir Serbinenko 
Date:   Thu Nov 14 12:10:08 2013 +0100

Add GRUB2 payload to build system

Since a long time GRUB 2 is a viable payload alternative to SeaBIOS and
    FILO. So make it easy for coreboot users to use GRUB 2 as a payload by
    integrating it into coreboot’s build system, so it can be selected in
    Kconfig.

As the last GRUB 2 release 2.00 is too old and has several bugs when
    used as a coreboot payload only allow to build GRUB 2 master until a new
    GRUB release is done. The downside is, that accidental breakage in
    GRUB’s upstream does not affect coreboot users.

Currently the GRUB 2 payload is built with the default modules which
    results in an uncompressed size of around 730 kB. Compressed it has a
    size of 340 kB, so it should be useable with 512 kB flash ROMs.

Tested with QEMU.

Change-Id: Ie75d5a2cb230390cd5a063d5f6a5d5e3fab6b354
    Signed-off-by: Vladimir Serbinenko 
    Reviewed-on: http://review.coreboot.org/4058
    Reviewed-by: Paul Menzel 
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer

See http://review.coreboot.org/4058 for details.

-gerrit