[gtkada] Gtk.Label

[Manuel Op de Coul]

I was trying to change a mnemonic label on a notebook tab and found 
out some things:

The comment of Gtk.Label.Gtk_New_With_Mnemonic mentions a procedure
Set_Mnemonic_Widget which is still missing. I seem to need it.

I assumed that Get_Use_Underline and Set_Use_Underline are a normal
selector/constructor pair but they are totally different. Very
confusing! Can something be done about it?

The comment for Set_Use_Underline doesn't say how or if it
interacts with Set_Pattern.

When Set_Use_Underline is called on a label with an underline pattern.
the underline disappears for Underline => True. Also for Underline => 
False.

So it's totally unclear what Set_Use_Underline is for.

Thanks,

Manuel