* Added extensible test for rebroadcasting files with UDP, multicast, and broadcast
* Added utility functions file_exists and file_size to Madara::Utility
* Updated to version 1.3.9

git-svn-id: http://madara.googlecode.com/svn/trunk@1173 2850746a-f1c8-11dd-b507-8b4ecd5210be