Okay, point system for nation design again

[DrPraetorious]

This is scaled back considerably from the original version, which was going to be used to score arbitrary nations with any combination of units and magic paths based on the strengtht of the units, diversity of the units, etc. etc. It was ungodly complicated and it didn't work.

This one, instead, lets you design nations using preset rules, The points costs are almost completely arbitrary. Kindly use them to design a few nations (I recommend using 1,000 points total, as that is a good round number), and see how they come out. Some things are doubtless over-priced, some things are doubtless under-priced.

There's a bunch more work to do but the critical game-balance aspects are in place. Also let me know if I should pepper it with more more mod-code to make using it easier.