gEDA-user: [pcb] how to make pad on two sides, no drill

[Dave N6NZ]

I'm looking at incorporating detachable lead frame pins like this:

http://www.die-tech.org/dildip.htm

in a project.  This presents a couple of kinks in PCB. 1) You want a top 
and bottom pad, with no drill.  2) Both pads represent the same net, but 
PCB has no knowledge of the connectivity provided by the pin, so both 
rats and DRC will get confused.

I suppose I could define a pin with a magic drill size, and then 
post-process the drill file with a script to exterminate the fake 
drills.  Is there a more elegant solution?  Like perhaps PCB gives 
special treatment to a drill size of zero (he asks hopefully...)?

-dave