[empathy] (13 commits) ...Merge branch 'av-handler-622368'

[Guillaume Desmottes <gdesmott src gnome org>]

Summary of changes:

  f43fbe8... stop handling internally stream media channels
  6b7a7b3... call-factory: use TpSimpleHandler to handle incoming calls 
  f20aa2a... remove empathy_call_factory_new_call
  eafc983... tp-call: use the Requested property to check if the call is
  066f1c9... tp-call: use TargetHandle to get the remote contact
  57459c6... tp-call: use tp_g_signal_connect_object to connect signal o
  2064d53... empathy_call_factory_new_call_with_streams: request channel
  bd2d501... empathy_call_handler_start_call: use empathy_call_factory_n
  b379e5e... empathy_tp_call_accept_incoming_call: early return if the c
  31e110e... remove empathy_call_handler_new_for_contact_with_streams
  d22972c... remove empathy_tp_call_to
  89ca74a... new-call-dialog: create the AV channel using the TargetID s
  09df593... Merge branch 'av-handler-622368'