Spoiled Weighted Average - Au Naturel Edit

Attempting some changse to make life a little bit easier

• food cooked in the likes of furnaces should now auto-merge and not stall the general cooking pipeline because spoiled amounts are disagreeing on the output slot (especially when combined with thirst was taken).
• Added some quick heuristics that make picking up food and auto-stacking a bit more convenient to cut down on inventory management slightly.  Food within 5% of each other in inventory should generally auto-stack and adopt the lower-bound spoilage of combined foods.
• Internal states of spoilage lessened in granularity (should be 100 aligning with the reported percentages now).