Update from upstream SpigotMC

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CraftBukkit-Patches/0159-Don-t-Fire-InventoryCloseEvent-Unless-Required.patch

@@ -0,0 +1,19 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: md_5 <git@md-5.net>
+Date: Tue, 30 Sep 2014 21:49:10 +1000
+Subject: [PATCH] Don't Fire InventoryCloseEvent Unless Required
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
++++ b/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java
+@@ -0,0 +0,0 @@ public class CraftEventFactory {
+     }
+ 
+     public static void handleInventoryCloseEvent(EntityHuman human) {
++        if (human.activeContainer == human.defaultContainer) return; // Spigot
+         InventoryCloseEvent event = new InventoryCloseEvent(human.activeContainer.getBukkitView());
+         human.world.getServer().getPluginManager().callEvent(event);
+         human.activeContainer.transferTo(human.defaultContainer, human.getBukkitEntity());
+--