Added documentation to gtksizegroup.sgml explaining what happens with height-for-width widgets.
Added documentation to gtksizegroup.sgml explaining what happens with height-for-width widgets.

When grouping height-for-width trading widgets (wrapping labels for instance)
vertically; the height for the minimum width will always be used for the entire
group... this patch warns about this in the docs.

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