pointer (touchpad) aceleration and threshold too low in 11.3.* builds

[Eduardo H. Silva]

xset q tells that in 11.3.1, the pointer is configured with the values:

acceleration 7/4 threshold: 1

This takes 2, 3 and sometimes 4 swipes to move across the screen. It's
quite a difference with a typical touchpad on bigger laptops, and
although the experience can't be duplicated because we can't expect
kids to be already highly trained with a touchpad, I think it could be
improved.
I think the balance is to have a larger threshold, so that slow
movements are allways acurate, and a higher acceleration, so that
movements across the screen are sufficiently fast (very important in
Sugar to access the frame for example). Managing to drop down the
amount of swipes needed to move across the screen (like 2 swipes)
would be excellent and more in par with the older pre 11.3.* behavior.

Eduardo