[undertow-dev] Package rename

[Stuart Douglas]

Just a heads up that I am planning on moving some classes around. 

I am going to create a io.undertow.server.protocol package, and then move all http and ajp specific code to sub packages (similar to what I recently did with the client). At the moment the layout does not really make sense, and is basically just a holdover from the early days. 

https://github.com/stuartwdouglas/undertow/compare/packages

Stuart