[coreboot-gerrit] Patch merged into coreboot/master: 8888316 build: fetch submodules as required

the following patch was just integrated into master:
commit 88883163c49c62d3c5156eb5fc95ef718065f561
Author: Patrick Georgi 
Date:   Wed Oct 29 15:50:32 2014 +0100

build: fetch submodules as required

Also document the unusual git feature we employ for 3rdparty

Change-Id: I1d1c986f9d1c4dd8db687d746dbdeb510679141a
    Signed-off-by: Patrick Georgi 
    Reviewed-on: http://review.coreboot.org/7243
    Tested-by: build bot (Jenkins)
    Reviewed-by: Edward O'Callaghan

See http://review.coreboot.org/7243 for details.

-gerrit