Update to 1.8.4

CraftBukkit-Patches/0019-Thread-Naming-and-Tweaks.patch

@@ -0,0 +1,21 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: md_5 <md_5@live.com.au>
+Date: Tue, 23 Apr 2013 11:50:27 +1000
+Subject: [PATCH] Thread Naming and Tweaks
+
+Removes the sleep forever thread and adds useful names for debugging to all staged thread files.
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
++++ b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
+@@ -0,0 +0,0 @@ public class CraftScheduler implements BukkitScheduler {
+      */
+     private final ConcurrentHashMap<Integer, CraftTask> runners = new ConcurrentHashMap<Integer, CraftTask>();
+     private volatile int currentTick = -1;
+-    private final Executor executor = Executors.newCachedThreadPool();
++    private final Executor executor = Executors.newCachedThreadPool(new com.google.common.util.concurrent.ThreadFactoryBuilder().setNameFormat("Craft Scheduler Thread - %1$d").build()); // Spigot
+     private CraftAsyncDebugger debugHead = new CraftAsyncDebugger(-1, null, null) {@Override StringBuilder debugTo(StringBuilder string) {return string;}};
+     private CraftAsyncDebugger debugTail = debugHead;
+     private static final int RECENT_TICKS;
+--