gEDA-dev: Spice SDB slotting fix

[Ales Hvezda]

[ snip ]

> The spice-sdb fix removes all previous code which iterated over slots
> for a given package, replacing it with a custom (get-uref ...) procedure
> which ensures each slot of a component is given a unique uref when
> gnetlist traverses the schematic. This means each slot will appear as a
> separate "package" in the gnetlist data-structures, even if each slot
> uses the same refdes= attribute.

[ snip ]

> Comments?
>

Hi PeterC, 

I've looked over this patch and it seems reasonable enough (by inspection).
Please push it and I will do some further testing.  Thanks,

-Ales