Fix a wrong actor body lookup when dominated
Add protection against ranged attacks to some armor types
When sent flying, sum weight of all actor's organs and items
Tweak speed computation now that actors have weights
Merge benGroundItems and benAvailableItems
Remove some Ord instances

We don't want to sort big data structures.
Remove some dead code dicovered by HPC
Activate foe's items from his inv, not eqp
Let AI explore cache tiles again