Increasing KF5 cmake requirement to 3.6?

[Albert Astals Cid]

The KF5 minimum cmake requirement sits at 3.0

I doubt anyone is using that to build KF5 so it's a bit of a "lie".

I'm going to suggest it to increase it to 3.6, it would still most probably be a lie since i don't think any of use uses such an old (2 years version) either, but it'll be a smaller lie, and if we look at the cross section of distros that ship Qt 5.9[1] (current minimum requirement) and their cmake versions[2], Scientific Linux is the one shipping an oldest cmake and it's 3.6.3.

What do you think?

Cheers,
  Albert

[1] https://repology.org/metapackage/qt5-base/badges
[2] https://repology.org/metapackage/cmake/badges