background: Avoid updating the background twice
Only update the settings on layer-surface configure but wait for the monitor::configured signal before drawing anything.
This avoids drawing the background twice on each rotation causing even more flicker.
This can go past 0.4.0 since it benefits form some more testing.
Signed-off-by: Guido Günther guido.gunther@puri.sm
Edited by Guido Gunther