longpress: Use xsettings to determine long press duration
longpress: Use xsettings to determine long press duration

GtkSettings::gtk-long-press-time is used to this effect.

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