Add f2fs support

Change-Id: I11a53682b6494463e3194e77f9dec2deeea130ca
Add libsepol

Change-Id: Ia8993ad371b782fb41ffcd90d194c4212f95e857
cm: sepolicy: Add contexts for cm recovery

 * Allow setup of secure adb (setup_adbd)

 * minivold in recovery

Change-Id: Id1243154f4016b59e54890404cadea46a2aad212

Conflicts:
	sepolicy/sepolicy.mk