Saving config to calibrator's generic format and restoring calibration from this file

Created by: navrocky

New parameters is: --output-type calibrator, --restore config

This can be useful in case when I don't have access to xorg.conf. So now I can save calibration config to file:

xinput_calibrator --output-type calibrator --output-filename calibration.conf

later I can restore calibration:

xinput_calibrator --restore calibration.conf