entry: Use the drag-started signal
entry: Use the drag-started signal

Use the drag-started signal to differentiate between drags that
move a handle and taps on a handle. Show the touch selection popup
for the latter, but not the former.

jigpu/gtk,chergert/gtk,Adamovskiy/gtk,jigpu/gtk,jadahl/gtk,jadahl/gtk,Adamovskiy/gtk,grubersjoe/adwaita,jadahl/gtk,jigpu/gtk,chergert/gtk,Adamovskiy/gtk,alexlarsson/gtk,grubersjoe/adwaita,davidgumberg/gtk,chergert/gtk,Adamovskiy/gtk,grubersjoe/adwaita,jadahl/gtk,jigpu/gtk,davidgumberg/gtk,davidgumberg/gtk,alexlarsson/gtk,grubersjoe/adwaita,jigpu/gtk,Adamovskiy/gtk,jadahl/gtk,chergert/gtk,chergert/gtk,grubersjoe/adwaita,Adamovskiy/gtk,jigpu/gtk,jigpu/gtk,davidgumberg/gtk,jigpu/gtk,davidgumberg/gtk,grubersjoe/adwaita,alexlarsson/gtk,davidgumberg/gtk,davidgumberg/gtk,alexlarsson/gtk,Adamovskiy/gtk,chergert/gtk,grubersjoe/adwaita,alexlarsson/gtk,alexlarsson/gtk,alexlarsson/gtk,alexlarsson/gtk,Adamovskiy/gtk,chergert/gtk,jadahl/gtk,jadahl/gtk,chergert/gtk,jadahl/gtk,grubersjoe/adwaita,davidgumberg/gtk