[Telepathy] merge: telepathy-sofiasip

[Merge Monkey]

Merge to:

  telepathy-sofiasip

From:

  /home/zabaluev/public_html/darcs/telepathy-sofiasip-shutdown-cleanups-20070404

Changes:

  Mikhail Zabaluev <mikhail.zabaluev at nokia.com>
    Removed vestigal GObject signals on SIPConnection

  Mikhail Zabaluev <mikhail.zabaluev at nokia.com>
    removed an outdated media channel header inclusion in sip-connection-private.h

  Mikhail Zabaluev <mikhail.zabaluev at nokia.com>
    Provide a SIPConnectionSofia state adapter with the minimum necessary data for the NUA callback, to untie the SIPConnection D-Bus object lifetime from the NUA stack shutdown

  Mikhail Zabaluev <mikhail.zabaluev at nokia.com>
    Properly declared the shutdown states enum and its usage

  Mikhail Zabaluev <mikhail.zabaluev at nokia.com>
    Cleaned up header inclusions and magic type macro definitions; introducing SIPConnectionSofia as the NUA magic

  Mikhail Zabaluev <mikhail.zabaluev at nokia.com>
    priv_free_nua() does not need the SIPConnection self pointer