Nothing terribly exciting, just a hackish implementation of solid mode CDDM drawing for cases when we are building with core profile. The goal is to be able to see SOMETHING with new OpenGL for thew guys who tests alembic and friends in blender2.8 branch. This is a temporary solution, the whole drawing will be reworked. Limited to hardcoded material and lighting. Selection outline color is also hardcoded because of lack of glColor() in the core profile. After this commit there is no big stoppers from stop worrying about legacy OpenGL, so we can go core profile as the only way for Blender. While some areas will become broken after that, we'd better just fix them after that and for now just focus on more important design work.