How KDE uses Cmake

The ​KDE Project uses cmake to build the base system. Since KDE is a large established project, it stands to reason that they have an existing body of evidence for how using cmake impacts the development and support of KDE. This is a, likely non-comprehensive, compendium of "evidence" of that impact on the KDE project. The evidence comes from reading their ​bug database, ​build system email list, and any other source we can come across.