Merge changes Ia6ae54ec,I65e7c9b7,I7875fc6e,Ia5363453,Id77b7720, ...

* changes:
  Improve IPv6 networking for radio
  Return the auth status as the error code for +CSIM
  Pass the size of the vatiable instead of a pointer to it
  Add support for carrier restrictions to ril
  Add support to query modem activity info in ril
  Emulator: add CSIM authentication support
  Return result after RIL set auto network selection