[VVerse] Trickier FTL gates

IIRC, in the Pournelle/Niven setting with Alderson drives
the transit in would scramble computers. This would make
wormholes much easier to defend because the attacker can't
bombard you with smart missiles. Clockwork timers on nuke
bombs worked, but nothing more elaborate.

In the Andromeda universe, slipstreaming is only possible
for living intelligent beings. I don't think this was ever
justified even at a PSB level, but again it would make
attacking through a wormhole a lot more dangerous.

	cheers,
	Hugh