Reviewed-by: alanb, dholmes, forax, sherman, smarks
Contributed-by: NPrasannaa &lt;prasannaa_ss@yahoo.com&gt;, Martijn Verburg &lt;martijnverburg@gmail.com&gt;, Goerge_Albrecht &lt;goerge.albrecht@gmx.net&gt;, Graham Allan &lt;grundlefleck@googlemail.com&gt;, Michael Barker <mikeb01@gmail.com>