Add Samsung STK support (telephony part)

Support for SMS-based SIM applications.
Partially rewritten the original patch by Jüri Schultz to be less intrusive.

Change-Id: I15d2de1781a2823e24941dd792db3d372578aa9f

Conflicts:
	src/java/com/android/internal/telephony/BaseCommands.java
	src/java/com/android/internal/telephony/RIL.java