MoveIt arm_navigation_msgs compatible, how to port?

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I'm new to ROS so this is perhaps a newbie question, sorry about that.

I'm trying to connect our kuka 850 to ROS, and came across a third party stack on git (cant post link yet, here is with spaces inserted) https://github.com/uobirlab/kuka .

The manifest lists arm_navigation_msgs as a dependency, but wiki says this is deprecated and to use MoveIt instead. My options are then to try and build the stack as is, or port it to MoveIt.

1. Is arm_navigation_msgs compatible with MoveIt? If I build it with for example the arm_navigation source on git would it work with MoveIt? Or should I just install Fuerte to run this?

2. What would normally have to be changed to port this to MoveIt, can you give me some hints where to look?

Currently running ROS Hydro Medusa on Ubuntu 13.04.