Add obfuscation helper patch to assist update process.

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

CraftBukkit-Patches/0027-Remove-o-Option.patch

@@ -0,0 +1,23 @@
+From 149cdfe128beb0df0d9055d33a40d3b7da5e179c Mon Sep 17 00:00:00 2001
+From: md_5 <md_5@live.com.au>
+Date: Sun, 19 May 2013 18:29:48 +1000
+Subject: [PATCH] Remove -o Option
+
+Serves no purpose other than to confuse users.
+
+diff --git a/src/main/java/net/minecraft/server/PropertyManager.java b/src/main/java/net/minecraft/server/PropertyManager.java
+index bb535c2..93968bd 100644
+--- a/src/main/java/net/minecraft/server/PropertyManager.java
++++ b/src/main/java/net/minecraft/server/PropertyManager.java
+@@ -52,7 +52,7 @@ public class PropertyManager {
+     }
+ 
+     private <T> T getOverride(String name, T value) {
+-        if ((this.options != null) && (this.options.has(name))) {
++        if ((this.options != null) && (this.options.has(name)) && !name.equals( "online-mode")) { // Spigot
+             return (T) this.options.valueOf(name);
+         }
+ 
+-- 
+1.8.3.2
+