#261 OOS error on attitude cache (K-Mod)

There is an OOS fix to the attitude cache on K-Mod which should be ported to More Naval AI. For an explanation of the problem and the fix, see:

https://github.com/karadoc/Civ4-K-Mod/commit/cb86b19e33c02c34d16725de57c931c32f3dd9d2