msm8960-common: Use HTC8960RIL

* Move ro.telephony.ril_class to common
* Update class to extend QualcommSharedRIL

Change-Id: I9cfc98d677c283f63827c985859a9b18de1c47e2
Merge "msm8960-common: Use HTC8960RIL" into cm-10.1