gdkdisplay-x11: Don't do extra work when simply moving the window
gdkdisplay-x11: Don't do extra work when simply moving the window

We shouldn't bother recalculating all the visible regions and wiping
away the old updating areas if we're simply dragging the window around.

jigpu/gtk,Adamovskiy/gtk,Adamovskiy/gtk,chergert/gtk,ahodesuka/gtk,ahodesuka/gtk,Lyude/gtk-,davidgumberg/gtk,grubersjoe/adwaita,jadahl/gtk,ahodesuka/gtk,jigpu/gtk,grubersjoe/adwaita,jadahl/gtk,jadahl/gtk,jadahl/gtk,chergert/gtk,ahodesuka/gtk,grubersjoe/adwaita,alexlarsson/gtk,davidgumberg/gtk,davidgumberg/gtk,davidgumberg/gtk,alexlarsson/gtk,jadahl/gtk,alexlarsson/gtk,Adamovskiy/gtk,jadahl/gtk,Lyude/gtk-,jadahl/gtk,jigpu/gtk,alexlarsson/gtk,grubersjoe/adwaita,davidgumberg/gtk,chergert/gtk,jadahl/gtk,jigpu/gtk,alexlarsson/gtk,chergert/gtk,grubersjoe/adwaita,grubersjoe/adwaita,Adamovskiy/gtk,ahodesuka/gtk,Lyude/gtk-,chergert/gtk,chergert/gtk,chergert/gtk,Lyude/gtk-,Lyude/gtk-,Lyude/gtk-,Adamovskiy/gtk,jigpu/gtk,alexlarsson/gtk,ahodesuka/gtk,jigpu/gtk,grubersjoe/adwaita,alexlarsson/gtk,chergert/gtk,Lyude/gtk-,davidgumberg/gtk,jigpu/gtk,davidgumberg/gtk,jigpu/gtk,Adamovskiy/gtk,Adamovskiy/gtk,davidgumberg/gtk,alexlarsson/gtk,Adamovskiy/gtk,ahodesuka/gtk,grubersjoe/adwaita,Lyude/gtk-,ahodesuka/gtk