[Swan-dev] pluto: Change some connection loading IKE version checks

[D. Hugh Redelmeier]

I don't understand why 211c2b7b1fce9c72f15e68de6b69580c050e954d is a good 
idea.

The old tests were of the form "if we are not the right version, complain"
The new versions are of the form "if we are a particular wrong version, 
complain"

The original versions seem more robust.

Paul: can you explain why you think that the new version is an 
improvement?