Use one PermissibleBase for all Command Blocks.

This fixes issues with too many command blocks lagging or crashing the server, as well as just increases their performance in general.

CraftBukkit-Patches/0114-Use-one-PermissibleBase-for-all-Command-Blocks.patch

@@ -0,0 +1,33 @@
+From aefc5f0df1c5ec8a8172bef74967b1f34336d200 Mon Sep 17 00:00:00 2001
+From: FrozenBrain <carstenbamsti@googlemail.com>
+Date: Sun, 2 Mar 2014 21:13:46 +0100
+Subject: [PATCH] Use one PermissibleBase for all Command Blocks
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/command/ServerCommandSender.java b/src/main/java/org/bukkit/craftbukkit/command/ServerCommandSender.java
+index 1314c74..b339cf3 100644
+--- a/src/main/java/org/bukkit/craftbukkit/command/ServerCommandSender.java
++++ b/src/main/java/org/bukkit/craftbukkit/command/ServerCommandSender.java
+@@ -12,9 +12,18 @@ import org.bukkit.plugin.Plugin;
+ import java.util.Set;
+ 
+ public abstract class ServerCommandSender implements CommandSender {
+-    private final PermissibleBase perm = new PermissibleBase(this);
++    private static PermissibleBase blockPermInst;
++    private final PermissibleBase perm;
+ 
+     public ServerCommandSender() {
++        if (this instanceof CraftBlockCommandSender) {
++            if (blockPermInst == null) {
++                blockPermInst = new PermissibleBase(this);
++            }
++            this.perm = blockPermInst;
++        } else {
++            this.perm = new PermissibleBase(this);
++        }
+     }
+ 
+     public boolean isPermissionSet(String name) {
+-- 
+1.7.9.5
+