Add obfuscation helper patch to assist update process.

By: md_5 <git@md-5.net>

CraftBukkit-Patches/0030-Prevent-Shutdown-Hang.patch

@@ -1,32 +0,0 @@
-From 0911b5dd80e900a7c4c8fa7f4a5599ab3ee06592 Mon Sep 17 00:00:00 2001
-From: md_5 <md_5@live.com.au>
-Date: Tue, 11 Jun 2013 11:54:32 +1000
-Subject: [PATCH] Prevent Shutdown Hang
-
-Prevents server hanging if players disconnect during the shutdown sequence.
-
-diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
-index 7c01595..4977ea1 100644
---- a/src/main/java/net/minecraft/server/PlayerList.java
-+++ b/src/main/java/net/minecraft/server/PlayerList.java
-@@ -1152,8 +1152,15 @@ public abstract class PlayerList {
-     }
- 
-     public void u() {
--        for (int i = 0; i < this.players.size(); ++i) {
--            ((EntityPlayer) this.players.get(i)).playerConnection.disconnect(this.server.server.getShutdownMessage()); // CraftBukkit - add custom shutdown message
-+        while (!this.players.isEmpty()) {
-+            // Spigot start
-+            EntityPlayer p = (EntityPlayer) this.players.get( 0 );
-+            p.playerConnection.disconnect( this.server.server.getShutdownMessage() );
-+            if ( ( !this.players.isEmpty() ) && ( this.players.get( 0 ) == p ) )
-+            {
-+                this.players.remove( 0 ); // Prevent shutdown hang if already disconnected
-+            }
-+            // Spigot end
-         }
-     }
- 
--- 
-1.8.3.2
-