bugs 126, 127 fixed



git-svn-id: http://rfc5766-turn-server.googlecode.com/svn/branches/v3.2@1748 d3c6d0af-6456-5cbd-3218-6188ca4e956b
auth cleaning



git-svn-id: http://rfc5766-turn-server.googlecode.com/svn/branches/v3.2@1749 d3c6d0af-6456-5cbd-3218-6188ca4e956b
password change in the database is supported (for an active session)



git-svn-id: http://rfc5766-turn-server.googlecode.com/svn/branches/v3.2@1750 d3c6d0af-6456-5cbd-3218-6188ca4e956b