TODO
   - simplify the code due to the multiplicity of sensor modules. Many
   modules gives overlapping information
   - give the choice to the user to choose whatever temperature he
   wants on each column. choice of the sensor driver ?
   - correct the wrong temperatures in the smp configuration : temp1
   is always internal (aka mb) temp, and temp2/temp3 are the dual
   CPU temps.
   ++ graphically adjust the triggers min/max for measured values.
   - find a better (adaptive ?) scale for sensor values with small
   variations
   - graphic of temp evolution.

any idea and/or patch is welcome. email it to Fabrice.Bellet@imag.fr
