GtkButton: Deprecate xalign and yalign properties
GtkButton: Deprecate xalign and yalign properties

These are directly passed through to GtkMisc/GtkAlignment, which
are both on the way to deprecation.

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