Integrate the nunchuk_mouse plugin.

[diedthreetimes]

This is a really old plugin that deserves to be integrated.

A few bugs have been fixed that make it usable.

[diedthreetimes]

Since this doesn't seem to be going anywhere I thought I would add exactly what this fixes. The plugin originally had an issue where it would control the mouse but it was to rigid to actually use. This patch fixes the problem allowing smooth enough mouse control to be usable.

[ArchNemSyS]

A little difficult to use as the REL_Y isn't even as a bit of a hack you can overwrite the calibration function as below to get a more even not perfect result.

nunchuk_mouse/nunchuk_mouse.c /* FIX TODO: with -REL_Y, we go down slower than we go up. */

• y_pos_range = buf[OFF_Y + OFF_MAX] - (center_y + DEADZONE);
• y_neg_range = 0 - y_pos_range;