Bug#497523: HAL way

[Modestas Vainius <modestas@vainius.eu>]

Hello,

rather than editing xorg.conf, one could add 
/etc/hal/fdi/policy/11-x11-synaptics.fdi like:

<?xml version="1.0" encoding="ISO-8859-1"?>
<deviceinfo version="0.2">
  <device>
    <match key="info.capabilities" contains="input.touchpad">
        <merge key="input.x11_options.TapButton1" type="string">1</merge>
        <merge key="input.x11_options.TapButton2" type="string">2</merge>
        <merge key="input.x11_options.TapButton3" type="string">3</merge>
    </match>
  </device>
</deviceinfo>

and restart hal/X. Could this be turned into debconf question?