Add obfuscation helper patch to assist update process.

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

CraftBukkit-Patches/0041-Lower-Chunk-Compression.patch

@@ -0,0 +1,36 @@
+From a5924094af40aee70d68f5e69922abc147411028 Mon Sep 17 00:00:00 2001
+From: md_5 <md_5@live.com.au>
+Date: Tue, 2 Jul 2013 09:07:54 +1000
+Subject: [PATCH] Lower Chunk Compression
+
+Use a chunk compression level of 4 - this provides an optimal balance between speed and compression.
+
+diff --git a/src/main/java/net/minecraft/server/PacketPlayOutMapChunk.java b/src/main/java/net/minecraft/server/PacketPlayOutMapChunk.java
+index 856e825..09b34e9 100644
+--- a/src/main/java/net/minecraft/server/PacketPlayOutMapChunk.java
++++ b/src/main/java/net/minecraft/server/PacketPlayOutMapChunk.java
+@@ -24,7 +24,7 @@ public class PacketPlayOutMapChunk extends Packet {
+         this.b = chunk.locZ;
+         this.inflatedBuffer = flag;
+         ChunkMap chunkmap = a(chunk, flag, i);
+-        Deflater deflater = new Deflater(-1);
++        Deflater deflater = new Deflater(4); // Spigot
+ 
+         this.d = chunkmap.c;
+         this.c = chunkmap.b;
+diff --git a/src/main/java/net/minecraft/server/PacketPlayOutMapChunkBulk.java b/src/main/java/net/minecraft/server/PacketPlayOutMapChunkBulk.java
+index 3eac231..bf3a139 100644
+--- a/src/main/java/net/minecraft/server/PacketPlayOutMapChunkBulk.java
++++ b/src/main/java/net/minecraft/server/PacketPlayOutMapChunkBulk.java
+@@ -22,7 +22,7 @@ public class PacketPlayOutMapChunkBulk extends Packet {
+         @Override
+         protected Deflater initialValue() {
+             // Don't use higher compression level, slows things down too much
+-            return new Deflater(6);
++            return new Deflater(4); // Spigot 6 -> 4
+         }
+     };
+     // CraftBukkit end
+-- 
+1.8.3.2
+