A USB mouse, a scroll wheel, moused and moused_flags

[Gregory Bond]

bfoz at terrandev.com said:
> Quickly checking ps ax | grep moused showed  that moused isn't being
> run with "-z 4" even though it is in  moused_flags. I can't find
> anywhere else to set options for moused. What 
>   am I missing?

usbd is starting moused using the info in /etc/usbd.conf - which doesn't 
pick up options from rc.conf.  So edit usbd.conf and add the flags there.