Add supported URI scheme to PhoneAccounts. (3/4)

1. Modify TelephonyConnectionService to register voidemail URI scheme.
2. Modify SipConnectionService to register 'tel' URI scheme in addition
to 'sip', should the user have chosen to use sip for all calls.
3. Modify SipBroadcastReceiver to listen to ACTION_SIP_CALL_OPTION_CHANGED
intent, triggering a rebuild of the SIP PhoneAccounts.
4. Fixed bug where all incoming SIP calls show as Unknown number.

Bug: 17140110
Bug: 17326799
Change-Id: I11d25c2cd98d02b80919d95ae9af077edb179fe0
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 66821ee..45c1e82 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -490,6 +490,7 @@
                 <action android:name="com.android.phone.SIP_INCOMING_CALL" />
                 <action android:name="com.android.phone.SIP_ADD_PHONE" />
                 <action android:name="com.android.phone.SIP_REMOVE_PHONE" />
+                <action android:name="com.android.phone.SIP_CALL_OPTION_CHANGED" />
             </intent-filter>
         </receiver>