OSC : Add ability to thicken the line on the screen - which is necessary
      when doing presentations on some ancient projector who's video scaler
      throws random lines away, rather than doing it properly.

      Most people don't do this, so there is no GUI. If you want a thicker
      line, edit the ini file by hand

Signed-off-by: Robin Getz <Robin.Getz@analog.com>