[DInput] Fix RailroadTycoon

[Christian Costa]

Lionel Ulmer wrote:

>Sorry for the huge diff, but I got sick when I saw my previous 2-space
>indenting style, so I had to re-indent everything... For people who want to
>do a code review, I could send them a 'diff -w' version :-)
>
Now, you're proposing, that would be cool. :-)

>
>And before anyone complains, yeah, I should have sent two patches (one
>cosmetic, one with the real meat in it) :-)
>
>              Lionel
>
>Changelog:
> - some TRACEing improvements
> - fix mouse Acquire which switched right and middle buttons
> - reset the mouse cursor at its original location on Unacquiring the device
>
>  
>
>  
>
Bye,
Christian