Bug#450851: xserver-xorg-input-evdev: pointer constatntly moves down-right in captured state (most of games) when using evdev

["Ionut Ciocirlan" <ionut.ciocirlan@gmail.com>]

This happens with a MS Intellimouse Explorer as well, so it's not
Logitech-related.

And indeed, it happens only when mouse is grabbed (setting \in_nograb
1 in tremulous "fixes" it).

Regards