adjust morale effect of some foods

Some of the foods were over-nerfed in terms of their effect on
morale in comparision to other foods.  A good rule of thumb is
that all foods should score between 3-5 and only spoilable foods
should be in the 7-8 range.  Bread is an odd-ball and I'm not sure
I agree with its current score (unless chicken/pork/beef get another
bump in morale value).

source/module_scripts.py

@@ -7524,17 +7524,17 @@ def keys_array():
       (item_set_slot, "itm_dried_meat", slot_item_food_bonus, 5),
       (item_set_slot, "itm_cheese", slot_item_food_bonus, 5),
       (item_set_slot, "itm_sausages", slot_item_food_bonus, 5),
-      (item_set_slot, "itm_butter", slot_item_food_bonus, 4), #brought down from 8
+      (item_set_slot, "itm_butter", slot_item_food_bonus, 5), #brought down from 8
 
 	  #Fat sources - perishable
       (item_set_slot, "itm_chicken", slot_item_food_bonus, 8), #brought up from 7
-      (item_set_slot, "itm_cattle_meat", slot_item_food_bonus, 7), #brought down from 7
-      (item_set_slot, "itm_pork", slot_item_food_bonus, 6), #brought down from 6
+      (item_set_slot, "itm_cattle_meat", slot_item_food_bonus, 7),
+      (item_set_slot, "itm_pork", slot_item_food_bonus, 7),
 
 	  #Produce
-      (item_set_slot, "itm_raw_olives", slot_item_food_bonus, 1),
+      (item_set_slot, "itm_raw_olives", slot_item_food_bonus, 3),
       (item_set_slot, "itm_cabbages", slot_item_food_bonus, 2),
-      (item_set_slot, "itm_raw_grapes", slot_item_food_bonus, 3),
+      (item_set_slot, "itm_raw_grapes", slot_item_food_bonus, 4),
       (item_set_slot, "itm_apples", slot_item_food_bonus, 4), #brought down from 5
 
 	  #Sweet items