range: Convert to g_object_notify_by_pspec
range: Convert to g_object_notify_by_pspec

This avoids pspec lookup overhead in g_object_notify.

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