Remodel Many Autotilesets as Autotileset-Corners #2588

Job	Run time
clickable (Debug, amd64, glew)	12m 9s
clickable (Debug, amd64, sdl)	11m 7s
clickable (Debug, armhf, glew)	11m 7s
clickable (Debug, armhf, sdl)	10m 36s
clickable (Release, amd64, glew)	11m 43s
clickable (Release, amd64, sdl)	11m 20s
clickable (Release, arm64, glew)	11m 6s
clickable (Release, arm64, sdl)	11m 0s
clickable (Release, armhf, glew)	10m 34s
clickable (Release, armhf, sdl)	9m 49s
	1h 50m 31s

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