selinux: Don't reset inherited system-wide configs
Use -fno-strict-aliasing

Change-Id: I43c68b97b9d68ee9f638ea15cad58d77ae254156
Optimized all png's.

Change-Id: Iecebcb7927493520371cd8b305742fbe5e241619
to: optipng -nc -nb -o7