Add Minimal FastUtil int/long collections.

Importing the full library would double the jar size... its way too large.
So lets just import the basic int/long based collections to then use
to improve performance on these kind of collections.

Spigot-API-Patches/0004-Player-affects-spawning-API.patch

@@ -0,0 +1,34 @@
+From e5bf28b61af878aee9b97ab52d6ed6930487362f Mon Sep 17 00:00:00 2001
+From: Jedediah Smith <jedediah@silencegreys.com>
+Date: Mon, 29 Feb 2016 17:22:34 -0600
+Subject: [PATCH] Player affects spawning API
+
+
+diff --git a/src/main/java/org/bukkit/entity/Player.java b/src/main/java/org/bukkit/entity/Player.java
+index 19f7ae7..145bb15 100644
+--- a/src/main/java/org/bukkit/entity/Player.java
++++ b/src/main/java/org/bukkit/entity/Player.java
+@@ -1270,6 +1270,20 @@ public interface Player extends HumanEntity, Conversable, CommandSender, Offline
+      */
+     public <T> void spawnParticle(Particle particle, double x, double y, double z, int count, double offsetX, double offsetY, double offsetZ, double extra, T data);
+ 
++    /**
++     * Get whether the player can affect mob spawning
++     *
++     * @return if the player can affect mob spawning
++     */
++    public boolean getAffectsSpawning();
++
++    /**
++     * Set whether the player can affect mob spawning
++     *
++     * @param affects Whether the player can affect mob spawning
++     */
++    public void setAffectsSpawning(boolean affects);
++
+     // Spigot start
+     public class Spigot extends Entity.Spigot
+     {
+-- 
+2.8.0
+