[PATCH] more buttons for your mouse

[John F. <jo...@fr...>]

I have a Micro$oft Intellimouse Optical which has a total of 7 buttons
if you count up down on the wheel as two. QuakeForge X11 did not
support buttons 6 and 7. 

Here is a patch against quakeforge-current (downloaded on 6 January)
to let Quakeforge support up to mouse 32 buttons. Only the X11 backend
was updated. The patch compiled and worked first time so there is
probably something wrong with it ;-)

I also more or less got rid of M_WHEEL_{UP,DOWN}, you might want to do
things differently.