Add new RIL commands and generic code cleanups. The only changes required for OMA DM support are the addition of five new methods in ITelephony.aidl for reading/writing NV items and performing NV config and radio resets (requires MODIFY_PHONE_STATE), along with the new RIL request IDs in RILConstants.java. Bug: 12864208 Change-Id: I958d2571580d98a49936ef2e6822e5ac086acbe2