ls980: Move properties to system.prop and change to global carrier

Cleaner, better, and better for international use

Change-Id: I39121d3f1553f4ca5515b81f20b5ac6d83e03d94
add sprint overlays for frameworks and mms app

Change-Id: Ifc87e5ac7af53a3671356bb0abf52055a19fce2f

Conflicts: