Add means of setting caps lock to be control key

Submitted by jlq..@..ne.net

Assigned to Jérôme Guelfucci

Link to original bug (#10925)

Description

I would like the option to configure my caps lock to be a control key as part of the standard keyboard settings. Tracking down the incantation to set the xkb option on the command line is more work, even if that's what XFCE would do under the covers.

Gnome has had it integrated in the past, one of the things I did like about it (before they stripped it).

Version: 4.10.1