Fix a regression in RTL flipping
Fix a regression in RTL flipping

This was only showing up with pack-end packing in horizontal boxes.
The RTL flipping has to be applied after moving the reference point
to the left edge of the child.

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