Update CraftBukkit to Minecraft 1.4(.2).

src/main/java/org/bukkit/craftbukkit/entity/CraftWitherSkull.java

@@ -0,0 +1,26 @@
+package org.bukkit.craftbukkit.entity;
+
+import net.minecraft.server.EntityWitherSkull;
+import org.bukkit.craftbukkit.CraftServer;
+import org.bukkit.entity.EntityType;
+import org.bukkit.entity.WitherSkull;
+
+public class CraftWitherSkull extends CraftFireball implements WitherSkull {
+    public CraftWitherSkull(CraftServer server, EntityWitherSkull entity) {
+        super(server, entity);
+    }
+
+    @Override
+    public EntityWitherSkull getHandle() {
+        return (EntityWitherSkull) entity;
+    }
+
+    @Override
+    public String toString() {
+        return "CraftWitherSkull";
+    }
+
+    public EntityType getType() {
+        return EntityType.WITHER_SKULL;
+    }
+}