Th­e way cal­ling $e->get­Mes­sa­ge is in some code lines wr­ong

### Comment
In some joomla php files there is a bug in the way there are calling the getMessage method of RuntimeException. This is a method not a member variable!

### Tracker
http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_id=8103&tracker_item_id=34033

### Code/Fix by  Benno Achermann