tboot: measure all command line arguments (CVE-2014-5118)

JP Blake's patch to address CVE-2014-5118.

Upstream-status: This patch was submitted upstream, but tboot took a different
approach to fixing it.  However, their fix is currently incomplete:
http://sourceforge.net/p/tboot/mailman/message/32760688/

OXT-19

Signed-off-by: Chris Patterson <pattersonc@ainfosec.com>
Merge pull request #28 from cjp256/oxt-19-v1

[OXT-19] tboot: measure all command line arguments (CVE-2014-5118)