Staging Security fixes for Jethro and Fido

I am integrating security fixes for both Jethro and Fido in my poky-contrib branches for those who may want to cherry-pick them before I submit pull requests. I am still working on a few more.

http://git.yoctoproject.org/cgit/cgit.cgi/poky-contrib/log/?h=akuster/jethro_cve_fixes

http://git.yoctoproject.org/cgit/cgit.cgi/poky-contrib/log/?h=akuster/fido_cve_fixes

- Armin