Added wood block to ash as well as coke balances

No longer does wood plank to coke produce ash, now (just like the wood
oven) one can burn to either.  Also can burn wood to ash (3).
Also removed requirement for 2 plant stacks to 1 plant stack that
produces 3 medicine.  Old ratio was 2:5, now it's 1:3

Dwarf Fortress/raw/objects/entity_default.txt

@@ -3060,6 +3060,8 @@ crematory
 	[PERMITTED_REACTION:BURN_CORPSE2]
 	[PERMITTED_REACTION:BURN_CORPSE]
 	[PERMITTED_REACTION:CHARCOAL3_BURNING]
+	[PERMITTED_REACTION:ASH1_BURNING]
+	[PERMITTED_REACTION:ASH_BLOCK_BURNING]
 	[PERMITTED_REACTION:SCRAPWOOD_ASH]
 	[PERMITTED_REACTION:BURN_BARREL]
 	[PERMITTED_REACTION:BURN_BED]

Dwarf Fortress/raw/objects/reaction_masterwork.txt

@@ -1036,13 +1036,12 @@ YESDUST[PRODUCT:100:1:BOULDER:NONE:INORGANIC:SMOKE][PRODUCT_DIMENSION:150]
 [SKILL:SURGERY]
 
 [REACTION:MAKE_MEDICINE]
-	[NAME:Make medicine potion from plants]
+	[NAME:Make medicine potion (3) from plants (1)]
 	[BUILDING:APOTHECARIUS:CUSTOM_SHIFT_M]
-	[REAGENT:A:1:PLANT:NONE:PLANT_MAT:NONE:STRUCTURAL][UNROTTEN][DOES_NOT_DETERMINE_PRODUCT_AMOUNT]
-	[REAGENT:C:1:PLANT:NONE:PLANT_MAT:NONE:STRUCTURAL][UNROTTEN][DOES_NOT_DETERMINE_PRODUCT_AMOUNT]
+	[REAGENT:A:1:PLANT:NONE:PLANT_MAT:NONE:STRUCTURAL][UNROTTEN][DOES_NOT_DETERMINE_PRODUCT_AMOUNT
 	[REAGENT:B:1:NONE:NONE:NONE:NONE]
 		[EMPTY][FOOD_STORAGE_CONTAINER][PRESERVE_REAGENT][DOES_NOT_DETERMINE_PRODUCT_AMOUNT]
-	[PRODUCT:100:10:DRINK:NONE:PLANT_MAT:MEDICINE:DRINK][PRODUCT_DIMENSION:150]
+	[PRODUCT:100:3:DRINK:NONE:PLANT_MAT:MEDICINE:DRINK][PRODUCT_DIMENSION:150]
 	[PRODUCT_TO_CONTAINER:B]
 	[SKILL:DIAGNOSE]  
 
@@ -4453,7 +4452,24 @@ YESSMELTING[PRODUCT:1:1:BOULDER:NONE:INORGANIC:VIOLENT_REACTION]YESSMELTING[PROD
 [PRODUCT_DIMENSION:150]
 [PRODUCT:100:1:BAR:NO_SUBTYPE:COAL:COKE]
 [PRODUCT_DIMENSION:150]
-	[PRODUCT:20:1:BAR:NO_SUBTYPE:ASH:NO_MATGLOSS][PRODUCT_DIMENSION:150]
+   YESDUST[PRODUCT:100:1:BOULDER:NONE:INORGANIC:SMOKE][PRODUCT_DIMENSION:150]
+[SKILL:WOOD_BURNING]
+
+[REACTION:ASH1_BURNING]
+[NAME:Make ash(3) from wood]
+	[BUILDING:SMELTER:CUSTOM_D]
+[REAGENT:A:1:WOOD:NO_SUBTYPE:NONE:WOOD]
+	[PRODUCT:100:1:BAR:NO_SUBTYPE:ASH:NO_MATGLOSS][PRODUCT_DIMENSION:150]
+	[PRODUCT:100:1:BAR:NO_SUBTYPE:ASH:NO_MATGLOSS][PRODUCT_DIMENSION:150]
+	[PRODUCT:100:1:BAR:NO_SUBTYPE:ASH:NO_MATGLOSS][PRODUCT_DIMENSION:150]
+   YESDUST[PRODUCT:100:1:BOULDER:NONE:INORGANIC:SMOKE][PRODUCT_DIMENSION:150]
+[SKILL:WOOD_BURNING]
+
+[REACTION:ASH_BLOCK_BURNING]
+[NAME:Make ash(1) from plank]
+	[BUILDING:SMELTER:CUSTOM_D]
+[REAGENT:A:1:WOOD:NO_SUBTYPE:NONE:WOOD]
+	[PRODUCT:100:1:BAR:NO_SUBTYPE:ASH:NO_MATGLOSS][PRODUCT_DIMENSION:150]
    YESDUST[PRODUCT:100:1:BOULDER:NONE:INORGANIC:SMOKE][PRODUCT_DIMENSION:150]
 [SKILL:WOOD_BURNING]
 
@@ -4463,7 +4479,6 @@ YESSMELTING[PRODUCT:1:1:BOULDER:NONE:INORGANIC:VIOLENT_REACTION]YESSMELTING[PROD
 [REAGENT:A:1:BLOCKS:NO_SUBTYPE:PLANT_MAT:NONE:WOOD]
 [PRODUCT:100:1:BAR:NO_SUBTYPE:COAL:COKE]
 [PRODUCT_DIMENSION:150]
-	[PRODUCT:20:1:BAR:NO_SUBTYPE:ASH:NO_MATGLOSS][PRODUCT_DIMENSION:150]
    YESDUST[PRODUCT:100:1:BOULDER:NONE:INORGANIC:SMOKE][PRODUCT_DIMENSION:150]
 [SKILL:WOOD_BURNING]