KDE Licensing Policy Updates

[Jonathan Riddell]

I've changed the recommended version of the MIT licence text in the
draft to the MIT Modern Style with sublicense.  This is to put it in
line with OSI and Linux Foundation SPDX form.

https://community.kde.org/index.php?title=Policies%2FLicensing_Policy%2FDraft&type=revision&diff=74184&oldid=74120

variations
https://fedoraproject.org/wiki/Licensing:MIT?rd=Licensing/MIT

linux foundation project
https://spdx.org/licenses/MIT.html

This is a proposal for discussion and isn't an imposition.

Jonathan