Bug 688710 - splashscreen shouldn't be always on top on OS X
Bug 688710 - splashscreen shouldn't be always on top on OS X

Activate the "hides on deactivate" behavior for splashscreens,
torn-off menus, utility windows, tooltips and notifications: when
another application is brought to the front, these windows are hidden
so as not to obscure it. This is the expected behavior for
application-specific floating windows on OS X.
(cherry picked from commit 0596f5591f36f57b99103914ba03abbed5765e8b)

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