Fix bug# 1997056

The SID and NID in CDMA_SUBSCRIPTION are in hexadecimal format. So change the parseInt() in CdmaServiceStateTracker and add comments in CommandsInterface.

	modified:   java/com/android/internal/telephony/CommandsInterface.java
	modified:   java/com/android/internal/telephony/cdma/CdmaServiceStateTracker.java
	modified:   java/com/android/internal/telephony/RIL.java

	modified:   java/com/android/internal/telephony/CommandsInterface.java
	modified:   java/com/android/internal/telephony/cdma/CdmaServiceStateTracker.java
	modified:   java/com/android/internal/telephony/RIL.java