Bump thread safety patch up.

By: md_5 <md_5@live.com.au>

CraftBukkit-Patches/0018-Reduce-number-of-LivingEntity-collision-checks.patch

@@ -1,37 +0,0 @@
-From 46f4036615ca43f25d593acb0f343211a2e0fe64 Mon Sep 17 00:00:00 2001
-From: Aikar <aikar@aikar.co>
-Date: Fri, 18 Jan 2013 19:31:14 -0500
-Subject: [PATCH] Reduce number of LivingEntity collision checks.
-
----
- src/main/java/net/minecraft/server/EntityLiving.java | 8 ++++++++
- 1 file changed, 8 insertions(+)
-
-diff --git a/src/main/java/net/minecraft/server/EntityLiving.java b/src/main/java/net/minecraft/server/EntityLiving.java
-index 350560e..84a2926 100644
---- a/src/main/java/net/minecraft/server/EntityLiving.java
-+++ b/src/main/java/net/minecraft/server/EntityLiving.java
-@@ -1428,12 +1428,20 @@ public abstract class EntityLiving extends Entity {
-     }
- 
-     protected void bg() {
-+        // Spigot start
-+        boolean skip = false;
-+        if (!(this instanceof EntityPlayer) && this.ticksLived % 2 != 0) {
-+            skip = true;
-+        }
-+        // Spigot end
-+
-         List list = this.world.getEntities(this, this.boundingBox.grow(0.20000000298023224D, 0.0D, 0.20000000298023224D));
- 
-         if (list != null && !list.isEmpty()) {
-             for (int i = 0; i < list.size(); ++i) {
-                 Entity entity = (Entity) list.get(i);
- 
-+                if (entity instanceof EntityLiving && skip) { continue; } // Spigot
-                 if (entity.L()) {
-                     this.o(entity);
-                 }
--- 
-1.8.1-rc2
-