EmptyProject needs revision

[KammutierSpule]

This is for 2-1 branch:

I am trying to follow the "EmptyProject" example, trying to build it multiple ways... Looks like this example project it is not updated: The CMake is coping all .libs to Plugins folders for each bin/target path but the source code is looking for the plugins.cfg / plugins_d.cfg on the bin/Data path

[darksylinc]

Mmm... ah! This broke with some macOS / OSX support enhancements, which changed how we handled some paths.