[coreboot] Patch merged into coreboot/master: 30b895f crossgcc: Save the script itself when cross build is over.

the following patch was just integrated into master:
commit 30b895f7e2809e1c624789f909e5cf0cc96f520d
Author: Zheng Bao 
Date:   Wed Feb 6 18:04:40 2013 +0800

crossgcc: Save the script itself when cross build is over.

In case that the new toolchains don't work well, we can trace back
    and reproduce the old tools by checking the xgcc folder. It is useful
    when my team members need to get my old toolchains on their own host
    machines.

Change-Id: I54e4bc6afcfbbf622165af6eae27bbb6efc2e8cc
    Signed-off-by: Zheng Bao 
    Signed-off-by: zbao 
    Signed-off-by: Paul Menzel 
    Reviewed-on: http://review.coreboot.org/2247
    Tested-by: build bot (Jenkins)
    Reviewed-by: Patrick Georgi

Reviewed-By: Patrick Georgi  at Wed Feb  6 12:23:15 2013, giving +2
Build-Tested: build bot (Jenkins) at Wed Feb  6 11:08:21 2013, giving +1
See http://review.coreboot.org/2247 for details.

-gerrit