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.
init.grouper.rc: bring inline with cm
device-common.mk: bring inline with cm
bluetooth/bdroid_buildcfg.h: bring inline with cm
storage_list.xml: bring inline with cm
BoardConfigCommon.mk: swith to my defconfig as I'm building my kernel now