Leave GDK_THREADS_ENTER/LEAVE visible for now
Leave GDK_THREADS_ENTER/LEAVE visible for now

Not defining these macros at all causes harsh build breakages.
Better to leave them defined (but documented as deprecated) for now.
Everybody will still get the deprecation warnings for the underlying
gdk_threads_enter/leave.

We can hide the macros again later on when the world has had some
time to port off GDK threads.

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