security: update docs

Add/update information about format string vulnerability
protections and stack protections.

(cherry picked from commit a627d7ca1ab19345b1c02c8193880c789157802e)

Change-Id: Iad1be6c64033015c6b384369e51fa329761336df
1 file changed
tree: d6ec880f3306b14b129474fd4ffc063cb7f17e32
  1. scripts/
  2. src/
  3. templates/
  4. .gitignore
  5. CleanSpec.mk
  6. README