prioritize better weapons for auto-equip

reverse that iterator!
Replaced "corpseItem" with "corpseGeo" and "corpseBattle" to fix some nasty logic and alien containment crashes.
(NOTE TO MODDERS: If you have a custom 2x2 unit, you will probably need to update it. See the ruleset for reference)
fix some LOF stuff
vanilla accuracy.

the best flavour.
Merge pull request #21 from SupSuper/master

sync