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/0029-EntityPathfindEvent.patch

@@ -1,4 +1,4 @@
-From 2ddd503b8812a66fa419df04733b2924fb794a0b Mon Sep 17 00:00:00 2001
+From a8bad8e3690285d16bd45408d20ec035ce9f6aaf Mon Sep 17 00:00:00 2001
 From: Aikar <aikar@aikar.co>
 Date: Mon, 28 Mar 2016 21:15:34 -0400
 Subject: [PATCH] EntityPathfindEvent
@@ -94,5 +94,5 @@ index 000000000..63e46b2fb
 +    }
 +}
 -- 
-2.25.1
+2.26.2