Update SuperSU v2.36 [1/2]

Change-Id: I6b52de9e1e79a6fcf08d0def46972374303b7041
Add in Sepolicy from CM

Change-Id: If76349cb27f81e5f0caad6e00a80276f2080ab1a
Validate any installed data's signature against our own

Try to prevent incompatible-signature system quirkiness

Change-Id: I73402d963a1b57ad0ee3c68ced4f2d7f074f927f
Merge remote-tracking branch 'upstream/lollipop' into lollipop