msm7x30: Camera HAL for HTC Sense devices (2/2)

This is the overlay portion of the camera HAL for msm7x30 devices. This
patch provides the overlay support for the specialized camera library
wrapper HAL. It is used with
http://review.cyanogenmod.com/#change,12793 but can also apply to
similar camera implementations.
Telephony: Copied over all of Chad0989's telephony with SettingsProvider fix

Very dirty "fix" for now - planning on cherry-picking to preserve history.

Change-Id: I251415e2c7159cadf5b56838db7c6a3630564b22
Telephony: Add liquid's mecha RIL

Change-Id: Ieee4238bf491e0681fdb57769df394fe6bf53622