Patch merged into coreboot/master: f0bdc15 cbfstool: elfheaders: use common checks and buffer helpers

the following patch was just integrated into master:
commit f0bdc15503b836a27ef1f4bcd6020540f928f034
Author: Aaron Durbin 
Date:   Tue Mar 4 22:08:05 2014 -0600

cbfstool: elfheaders: use common checks and buffer helpers

The elfheaders code was manipulating struct buffers. Use
    the introduced buffer helper functions. Additionally fix
    up offset and size checks for the program headers and section
    headers by using common code paths.

Change-Id: I279c77f77aaa1860a0be43fb111df890dd1d84d5
    Signed-off-by: Aaron Durbin

See http://review.coreboot.org/5368 for details.

-gerrit