Added count() method for Configuration object.


git-svn-id: http://yate.null.ro/svn/yate/trunk@5417 acf43c95-373e-0410-b603-e72c3f656dc1
Bug fixed. Show the correct number of registered users on status command output.


git-svn-id: http://yate.null.ro/svn/yate/trunk@5418 acf43c95-373e-0410-b603-e72c3f656dc1