MWI,phantom call,Suppl services.

1. IMS MWI Feature
- Add new API to update waiting
voice message count, for UI
propagation based on RFC 3842

2. phantom call support

Supplementary services

4.Unsol supplementary service notification
- send unsol supplementary notification to UI
- add call history info

5. Add Error message in CommandException

6. Add getExtras method

Miscellaneous:

7. IMS: Update Connect time for dialing/incoming SRVCC calls

Connect time (mConnectTimeReal) will be updated only for ACTIVE calls
and it's not updated for calls which are transferred from DIALING/ALERTING/
INCOMING/WAITING to ACTIVE as part of SRVCC. Due to this once call is
ended call duration will not be updated properly in connection.

Update Connect time properly for DIALING/ALERTING/INCOMING/WAITING to
ACTIVE SRVCC calls.

Change-Id: I551e63840b6a63e0cbd97919d4b03d2a68334dbd