selinux: Don't reset inherited system-wide configs

Change-Id: Ia23596bc4ad8a1fe7673188434b7327528e07c06
Optimized all png's.

Change-Id: I6b9a374b08a567e92c024df8d16844e7859f8cf7
to: optipng -nc -nb -o7
wifi.supplicant_scan_interval: 15 -> 30

Change-Id: I93a160e02367ec936980751846338e3fe281fcf6
Stweaks Support

Change-Id: I5ea72126ba84a2e2346fcbeb55ece5117ea1fdc7