gEDA-user: gerber to .dxf converter

[DJ Delorie]

> Gerber is just few types of output shapes in the PCB case we use,
> since the only apertures used are circles and squares.  Lines, arcs,
> and aperture sizes, aperture round or square are all that is needed
> to draw a PCB in .gbr or .ps or .dxf.

We also use flashes, polygons, and anti-drawn layers.

Hey Harry, can we use the clipper code to create a set of polygons
that reflects all the not-copper parts of the board?  We could use
that set to drive a CNC mill directly.