Bluetooth: Send default value for CNUM.

 - When null value is returned for operator's
   name and subscriber number from telephony
   API's add default values for those.

Change-Id: Ic00e79bd9c8ad1a69ea25683081634225090c563
CRs-Fixed: 756104
Reset the connection pending flag when SCO is disconnected

When bluetooth audio is disconnected mBluetoothConnectionPending
needs to be reset in order to get correct bluetooth state.

Change-Id: I2aab54147a9f9f0f35257e6366f400bd65d9be52
CRs-Fixed: 753883
BT: Send proper updates to headset for call swap.

In gsm network, when active and held calls are swapped, firstly
active call is put to hold making held call count as 2 and
BluetoothPhoneService updates callheld indicator as no call active.
After this next update comes to make original held call as active
and again callheld indicator as active and held is updated.
Avoid unnecessary first update to headset.
In cdma network, send callheld indicator for call swap within
active conference.

CRs-Fixed: 758732
Change-Id: Idc66a90b18391f53f196567b6f6e149b11ce11c8
Bluetooth: NPE found in static anaysis.

Fix NPE identified by static analysis.

Change-Id: I3704ea503684068528afb05db2ef9ff79d90455d
CRs-Fixed: 759479
IMS-VT: When TTY is ON, do not allow MO VT call

When TTY mode is ON, the user SHOULD NOT be allowed to make
a Mobile Originating (MO) VT call and an UI alert message will
be displayed explaining MO VT call cannot be initiated.

Change-Id: I774f0490850c6376be923c73aa8c930d66253f28
CRs-Fixed: 734257
Send 'reject call with sms' on the correct subscription.

Send sms on the subscription on which the call is rejected.
Add subscription info with the intent 'ACTION_RESPOND_VIA_MESSAGE'
on which the call was rejected.

Change-Id: I357184eae875e501b988375261cede68f796f00b
CRs-Fixed: 594214
Telecomm: Add support to set ring tone for SIM2

Can set different ring tone for SIM1 and SIM2.

Change-Id: Ie715e2c2d7e3760f7d0fe9ba2a9ecdafd9a42277
IMS-VT: Change parameter type of data usage

Change Data Usage methods to take parameters of type long
instead of int

CRs-Fixed: 747694

Change-Id: I6a277dedb5976261035084955ed8a90da256061a
Accept waiting call, when hold & active calls are present.

In order to accept waiting call when hold & active calls are
present on same subscription, disconnect active call before
sending answer request for waiting call.

Change-Id: Id33224e43ca6db283bf6f8a03cbaac4b6cdefac2
CRs-Fixed: 723716
Set audio mode after accepting the call

Set the audio mode to incall immediately after accepting the call and not wait
till call is reported as ACTIVE by RIL. This is done to speed up time taken for audio
to set up the voice path

Change-Id: Id78c467869693087c49b743e67b7a77aff841ae3
CRs-Fixed: 726708
Propagate the call substate changed message to the UI

Change-Id: I0465c65d9ac7af22cac544f6404056d0c2094cf4
CRs-Fixed: 749824