Merge CoglPango & Cogl
My intention with this proposal is to reduce the amount of "unnecessarily" separate libraries like CoglPango/Cogl & Cally/Clutter. By merging those two together and hopefully in the future Cally & Clutter. Mutter would only composed of 4 libraries:
- Mtk: Low level shared types
- Cogl: Rendering abstractions
- Clutter: The toolkit
- Meta: The compositor