Updated Upstream (Bukkit/CraftBukkit)

Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
b999860d SPIGOT-2304: Add LootGenerateEvent

CraftBukkit Changes:
77fd87e4 SPIGOT-2304: Implement LootGenerateEvent
a1a705ee SPIGOT-5566: Doused campfires & fires should call EntityChangeBlockEvent
41712edd SPIGOT-5707: PersistentDataHolder not Persistent on API dropped Item

Spigot-API-Patches/0078-PreCreatureSpawnEvent.patch

@@ -1,4 +1,4 @@
-From 51c2512ba9f95dbfd65b88b9fe21d56bde914c32 Mon Sep 17 00:00:00 2001
+From b70880b6efa57cdc1bc10a32ff65d2bd8d2a9294 Mon Sep 17 00:00:00 2001
 From: Aikar <aikar@aikar.co>
 Date: Sun, 14 Jan 2018 16:59:43 -0500
 Subject: [PATCH] PreCreatureSpawnEvent
@@ -125,5 +125,5 @@ index 000000000..d5edde9cd
 +    }
 +}
 -- 
-2.25.1
+2.26.2