How do you actually customize the mapping of the joystick?
I had a customized mapping for my 360 pad in linux that matched the older button layout that went all the way back to xbmc days on the xbox and have controlling kodi solely with my controller since way back, but now with the new joystick addon it is not working anymore 
According to the wiki I should just need to copy the default joystick.xml (/usr/share/kodi/system/keymaps/joystick.xml) and edit the functions and then add it to the .kodi/userdata/keymaps/ directory, but I have tried now several times and my mapping is still the default one.
So far it seems Kodi is ignoring my changed joystick.xml. Have I missed something?