Update selinux policy.

Small number of changes addressing
new denials seen with 4.3

Change-Id: I589bec371d2dbdf6cb4f03d949a1546e947acd86
Signed-off-by: rpcraig <rpcraig@tycho.ncsc.mil>
Policy updates to bring inline with AOSP.

* Move SEPOLICY vars to BoardConfigCommon.mk
  so tilapia can use.
* Bring over rild policy from AOSP. Though not
  explicitly used by grouper, tilapia needs it.
* Other small policy additions and subtractions.

Change-Id: I6da76b965d44866accb9e21496fe524f70d0cdd3
Signed-off-by: rpcraig <rpcraig@tycho.ncsc.mil>