Restructure PaperSpigot as a new set of modules

Allows us much greater control over the Spigot portion of the code
and makes us more "proper"
Credit to @Dmck2b for originally passing the idea along a while back

Bukkit-Patches/0005-Add-Arrow-API.patch

@@ -0,0 +1,34 @@
+From aedf79b730e528f2108d01d782bfc02290d1cff0 Mon Sep 17 00:00:00 2001
+From: md_5 <md_5@live.com.au>
+Date: Sun, 2 Jun 2013 15:08:24 +1000
+Subject: [PATCH] Add Arrow API
+
+
+diff --git a/src/main/java/org/bukkit/entity/Arrow.java b/src/main/java/org/bukkit/entity/Arrow.java
+index e49eef0..e7a32f7 100644
+--- a/src/main/java/org/bukkit/entity/Arrow.java
++++ b/src/main/java/org/bukkit/entity/Arrow.java
+@@ -39,4 +39,20 @@ public interface Arrow extends Projectile {
+      * @param critical whether or not it should be critical
+      */
+     public void setCritical(boolean critical);
++
++    public class Spigot extends Entity.Spigot
++    {
++
++        public double getDamage()
++        {
++            throw new UnsupportedOperationException( "Not supported yet." );
++        }
++
++        public void setDamage(double damage)
++        {
++            throw new UnsupportedOperationException( "Not supported yet." );
++        }
++    }
++
++    Spigot spigot();
+ }
+-- 
+1.9.1
+