Poisoning formula improvement:

...it it better to poison regenerating/in_village unit than to not poison them.

data/ai/dev/formula_ai_poisoning.cfg

@@ -3,10 +3,10 @@ ai_algorithm =formula_ai
 [ai]
     eval_list=yes
 
-    [register_candidate_move]
+    [register_candidate_action]
         name=poisoner
         type=attack
         evaluation="{ai/formula/poisoner_eval.fai}"
         action="{ai/formula/poisoner_attack.fai}"
-    [/register_candidate_move]
+    [/register_candidate_action]
 [/ai]

data/ai/formula/poisoner_eval.fai

@@ -5,11 +5,11 @@ if(
 	target.undead != 0,-1,
 	target.hitpoints < 5,-1,
 	target.max_experience - target.experience <= 8,-1,
-	index_of('regenerates',target.abilities) != -1,-1,
 	index_of('poisoned',keys(target.states)) != -1,-1,
-	find( villages, 'vill', vill = target.loc ), -1,
+	index_of('regenerates',target.abilities) != -1, 1,
+	find( villages, 'vill', vill = target.loc ), 1,
 	target.leader, 5,
-	1
+	2	
 )