Bases can resupply ships like a Resupply Depot if the line you mentioned is set on True. If you would like Bases to only give a fixed amount of supplies, you could make them "Ships" without any movement, as SJ did in the PBW Version of Pirates and Nomads (P&N PBW). Obviously, the AI isn't going to like such a change.
The lowest tonnage you can use is 0kt, which basically means no space taken at all. You cannot put something like 0.5 however, as the game will otherwise crash when loading the components.txt file.
Racial technology *should* be able to be traded with other Empires having this technology, but not with anyone else. It cannot be repaired, and a captured ship with racial technology will work fine even if you do not have the technology.
However, if it is what you would like to do, you could make a workaround to allow an Empire to research "unique" technologies even if it doesn't have the correct trait. It would go along these lines: (I do not quite recall the specifics however, so someone else more knowledgeable in this regard may want to correct me here)
- Technology A is racial tech, and can only be research by an Empire having the needed racial trait. (It would be something like the Theoretical research)
- Technology B isn't a racial tech, and can only be researched once you have technology A. Therefore, an Empire gaining this technology would be able to use this "unique" technology, even if it doesn't have the appropriate trait.
Edit: Stop reading my mind Ed!

We virtually wrote the same post, while I didn't look at yours before posting mine. I guess I should learn how to type faster.
[ May 13, 2004, 18:11: Message edited by: Alneyan ]