Patch merged into coreboot/master: util/cbfstool: use _XOPEN_SOURCE=700 to find strdup(3)

the following patch was just integrated into master:
commit 9d6a17b549ccb200ad9d04c7051e1404741a9d38
Author: Jonathan A. Kollasch 
Date:   Mon Jul 6 08:29:00 2015 -0500

util/cbfstool: use _XOPEN_SOURCE=700 to find strdup(3)

Change-Id: I974c6c8733356cc8ea4e0505136a34b6055abf0c
    Signed-off-by: Jonathan A. Kollasch 
    Reviewed-on: http://review.coreboot.org/10809
    Reviewed-by: Patrick Georgi 
    Tested-by: build bot (Jenkins)

See http://review.coreboot.org/10809 for details.

-gerrit