gEDA-dev: Spice SDB slotting fix

[Stuart Brorson]

Hi --

> As promised (when I authored a patch which broke spice-sdb in favour of
> fixing pinnumber updates), I have done a bit of work to restore the
> spice-sdb slotting functionality without any need to adjust pinseq
> attributes.

Thank you for doing this!  I've had a nagging worry about the slotting
problem with spice-sdb for a while.  I suppose I could have done
something about it.....

[....]

> Comments?

I guess my biggest question is:  Do all the unit tests still pass?

Stuart