That's really weird, but this particular feat is simply not on the list in character properties in the toolset.
Given that you can't give someone a feat via scripting, I have no idea what to do, really.
Has anyone else encountered this situation?
Edit: Alright, I figured it out. It was the fault of Polish translation which named the battleaxe almost the same as a handaxe (only on the feat list, though).
Sorry for polluting the forum. '>