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/0087-Add-extended-PaperServerListPingEvent.patch

@@ -1,4 +1,4 @@
-From 2ac81c41e0800c8bfe372eea825fbdcebfe7ed62 Mon Sep 17 00:00:00 2001
+From 1f72e6ba6fe22b8a0d93ce86effc67d43320e59f Mon Sep 17 00:00:00 2001
 From: Minecrell <minecrell@minecrell.net>
 Date: Wed, 11 Oct 2017 15:55:38 +0200
 Subject: [PATCH] Add extended PaperServerListPingEvent
@@ -369,5 +369,5 @@ index 612958a33..bb4f7702c 100644
 +    // Paper end
  }
 -- 
-2.25.1
+2.26.2