Add ro.telephony.disable-call check in dialing.

When ro.telephony.disable-call is set to true the phone disable actual calls. It provides a way to test in user-debug builds for stability runs. See bug 2031157.

	modified:   java/com/android/internal/telephony/TelephonyProperties.java
	modified:   java/com/android/internal/telephony/cdma/CdmaCallTracker.java
	modified:   java/com/android/internal/telephony/gsm/GsmCallTracker.java

	modified:   java/com/android/internal/telephony/TelephonyProperties.java
	modified:   java/com/android/internal/telephony/cdma/CdmaCallTracker.java
	modified:   java/com/android/internal/telephony/gsm/GsmCallTracker.java