-- v3: win32u: Merge drivers CreateLayeredWindow with CreateWindowSurface. win32u: Avoid sending WM_PAINT to layered window surfaces. winemac: Rely on win32u previous surface reuse. winemac: Remove unnecessary old window surface bounds copy. winewayland: Rely on win32u previous surface reuse. wineandroid: Rely on win32u previous surface reuse. winex11: Rely on win32u previous surface reuse. win32u: Simplify offscreen surface previous surface reuse check.