gdk: Have touch grabs behave like the implicit grab wrt crossing events
gdk: Have touch grabs behave like the implicit grab wrt crossing events

These are equivalent to an implicit grab (with !owner_events), so
if the touch leaves or enters the grab window, the other window
won't receive the corresponding counter-event.

grubersjoe/adwaita,Lyude/gtk-,msteinert/gtk,ebassi/gtk,Distrotech/gtk2,jadahl/gtk,Distrotech/gtk2,Lyude/gtk-,chergert/gtk,bratsche/gtk-,davidt/gtk,bratsche/gtk-,jigpu/gtk,jessevdk/gtk,chergert/gtk,ahodesuka/gtk,jadahl/gtk,davidt/gtk,chergert/gtk,grubersjoe/adwaita,grubersjoe/adwaita,Adamovskiy/gtk,jadahl/gtk,davidgumberg/gtk,chergert/gtk,davidgumberg/gtk,Distrotech/gtk2,jigpu/gtk,msteinert/gtk,davidgumberg/gtk,jessevdk/gtk,ebassi/gtk,jessevdk/gtk,ahodesuka/gtk,jadahl/gtk,ahodesuka/gtk,jigpu/gtk,ebassi/gtk,Adamovskiy/gtk,grubersjoe/adwaita,jessevdk/gtk,alexlarsson/gtk,msteinert/gtk,msteinert/gtk,ahodesuka/gtk,alexlarsson/gtk,chergert/gtk,davidt/gtk,ebassi/gtk,davidt/gtk,Lyude/gtk-,grubersjoe/adwaita,jessevdk/gtk,Adamovskiy/gtk,Sidnioulz/SandboxGtk,alexlarsson/gtk,jadahl/gtk,ebassi/gtk,jadahl/gtk,jessevdk/gtk,Lyude/gtk-,davidgumberg/gtk,bratsche/gtk-,ahodesuka/gtk,alexlarsson/gtk,ahodesuka/gtk,ahodesuka/gtk,davidt/gtk,Adamovskiy/gtk,Sidnioulz/SandboxGtk,Lyude/gtk-,Lyude/gtk-,jigpu/gtk,chergert/gtk,grubersjoe/adwaita,jigpu/gtk,chergert/gtk,davidgumberg/gtk,davidt/gtk,Lyude/gtk-,jigpu/gtk,chergert/gtk,bratsche/gtk-,grubersjoe/adwaita,grubersjoe/adwaita,alexlarsson/gtk,davidgumberg/gtk,ahodesuka/gtk,jigpu/gtk,davidgumberg/gtk,Adamovskiy/gtk,Distrotech/gtk2,msteinert/gtk,jadahl/gtk,alexlarsson/gtk,jigpu/gtk,Sidnioulz/SandboxGtk,Adamovskiy/gtk,ebassi/gtk,bratsche/gtk-,Sidnioulz/SandboxGtk,davidgumberg/gtk,Distrotech/gtk2,jessevdk/gtk,bratsche/gtk-,Lyude/gtk-,Sidnioulz/SandboxGtk,Distrotech/gtk2,Adamovskiy/gtk,Sidnioulz/SandboxGtk,jadahl/gtk,Adamovskiy/gtk,alexlarsson/gtk,alexlarsson/gtk,msteinert/gtk