Renderd

• render_expired(1) expires a list of map tiles so that they get re-rendered.
• render_list(1) renders a list of map tiles by sending requests to a rendering daemon.
• render_old(1) renders a list of map tiles by sending requests to a rendering daemon.
• render_speedtest(1) Benchmapr tile rendering with renderd.
• renderd(1) Rendering daemon for rendering OpenStreetMap tiles.