Castle Game Engine: Double-clicking on Pascal files in CGE editor, to open them in Lazarus, reliably opens them in proper project

From Castle Game Engine: link to original post

Thanks to the related Lazarus issue being fixed by Juha Manninen, our editor can now open Pascal files in the proper Lazarus project reliably if you use Lazarus >= 2.2.

We also query Lazarus version, to activate new behavior only for new Lazarus. You should see your Lazarus version in the editor preferences window.