ID instead of name. The names may be localized for
the local language.... Bouton 0 instead of Button 0, etc.
I also changed the compatible layer and the one default
mapping to use logical IDs now.
Added a few constants to JoystickButton just to make
things easier for the standard buttons 0-11.
git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@9782 75d07b2b-3a1a-0410-a2c5-0572b91ccdca