CDMA RIL: add SVDO support (1/2)

based on Richard Ross's commit

Change-Id: I313edd3c52d1d0b397ca519757470b87882424d7
Framework: Fix GSM signal strength

Certain OEM gsm ril libs send back a bogus value for LTE signal
that causes SignalStrength.java to default to LTE and report
incorrect signal values.
Use prop value ro.telephony.ril.v3=signalstrength to get proper
GSM signal reading on certain devices.

Change-Id: Ibb23d7b3a2d21001ccbbc6ebfbdc3c5248f18cfc
Signed-off-by: dhacker29 <davidhackerdvm@gmail.com>
telephony: hide needsOldRilFeature

Change-Id: I741b510fdacc166ad40741bf2e9db5c8a1039384
TelephonyProperties: Alpha ID fix for OPEN_CHANNEL and other p-commands (1/2)

p-cmds that support the below mentioned scenarios:
- SETUP CALL
- OPEN CHANNEL
- SEND DTMF
- SEND SMS
- SEND SS
- SEND USSD
- LAUNCH BROWSER
- PLAY TONE
- SELECT ITEM

Senarios handled :
- NO ALPHA ID : Introduce a new configurable sys prop
  "persist.atel.noalpha.usrcnf".
   --  Allow display of default UI confirmation if prop is set to true
   --  No UI confirmation to be show if prop is set to false
- NULL ALPHA ID (len = 0 ) :
   -- NO UI confirmation to be displayed

Cherry-picked from CAF commit 5ea0d64186ca08abc0857aae1f83de969393be3b
Without this SimToolkit will pop up asking for user response instead
of recieveing response from framework.

Change-Id: I012707285ee3a93119c2e2956ec599d631db10d5
Signed-off-by: dhacker29 <davidhackerdvm@gmail.com>

Conflicts:

	telephony/java/com/android/internal/telephony/TelephonyProperties.java
ServiceState: add support for DCHSPAP

Change-Id: Ib0a328652c14580718400b00146b770481be5458