UDP support for FluentSender/FluentHandler.  Added support for appending log level to the tag.

I wanted to add the logging capabilities into our current product, but I wanted to ensure that it didn't cause any performance issues, so I implemented UDP protocol support in the FluentSender.  I also implemented a new setting for the FluentHandler allowing for developers to choose to append the log level to the tag name with a '.' . 

 These were pretty simple changes, but please let me know if you have any questions or suggestions.