* nua: using NUTAG_PROXY() as handle-specific tag
  
  Added nua_dialog_update_params() and virtual method usage_update_params()
  for each dialog usage.



git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@8384 d0543943-73ff-0310-b7d9-9358b9ac24b2