firefox: bump to 30.0.

(cherry picked from commit 2fec89295916968b12381b9c40ff1726d69063a4)
nspr: update to 4.10.6

Required for Firefox 30.0.

(cherry picked from commit 4b55530bd2f4052b5f487e6a2ec7a35e4c9dc99e)
linux: Update to 3.12.22

Fixes CVE-2014-3153 (local privilege escalation via futex()).

(cherry picked from commit 27c72f337b2d5e247a513a553473b00f93eb7871)