First cut at restricting mount options.
First cut at restricting mount options.

This is a first cut at adding nodev,noexec,nosuid where possible to mount points.

I still need to run BVTs, etc., but passing this for an initial review.

Change-Id: I0ef53a52e4dab8f154e6bbc5631cb5bf48af8abb
Change-Id: I958cc25459ffffdecf4aa35c2023c7af90556d1e

BUG=7286
TEST=Install,boot,login

Review URL: http://codereview.chromium.org/3634001

joshfire/chromiumos-platform-init