About right analog stick

[KrossX]

@Henrik: What do you have in mind for proper right stick mapping?

Maybe just add support for using axes as digital input? Linear with maybe a lower threshold for bigger diagonals. Or maybe there's no need for diagonals and 4-way is preferred... *sighs*

As per the commit comments, with mappable axes and per-game controls those weird cases can be covered instead of having multiple preset choices. On Windows that is.