CM12 Fixups

-Remove sepolicy

-Temp remove custom RIL

-Switch eng builds

-Add flag to use awesome player and not nuplayer

-Fix up init.environ.rc

Change-Id: Ic7dd652610ee26385f4c4821d7191606ab72c15b
Revert "releasetools: Enforce Clean Installs"

This reverts commit eac50f292b2456ad4e867afe5d57dfea21e2ccef.

Conflicts:
	releasetools.py

Change-Id: Id8cab7b7230c2ee7cab060c2a44969118adb8f0e