* nua: using global preferences. Added NUTAG_SHUTDOWN_EVENTS().

Mon Feb 25 14:14:15 EST 2008  Pekka.Pessi@nokia.com
  * nua: added NUTAG_SUB_EXPIRES()



git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@7759 d0543943-73ff-0310-b7d9-9358b9ac24b2