borderable or boder?

I'm going to use 'border.xwt' for having borders based on the premise 
that if we were to have borderable, then we should really rename bevel 
to bevelable and that's something I'm reluctant to do.

A border is a border, not an 'ability' which is what I would consider 
all the -ables to be.

<bevel>
     <box />
</bevel>

<border>
     <box />
</border>

<borderable>
     <box />
</borderable>

<focusable>
     <box />
</focusable>

You know it makes sense. ;)

I'll commit it tomorrow.  That and an overhaul of redirectable.

After that, I'll be adjusting the 0.5pre3 widgets to work with Nitrogen. 
  Once text is working in Nitrogen, we (I?) should be able to get the 
widgets up and running pretty quickly and then I'll improve tabpane and 
tree, and add table.

- Charlie