Temporarily reverting sofia-sip library back to prior to the changes merged on 2/7/2007 due to ongoing unresolved issues in the new code.  Will re-commit these changes once we receive fixes from the sofia-sip tree for these outstanding issues.  Make sure recommended.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@4308 d0543943-73ff-0310-b7d9-9358b9ac24b2