Added ItemSpawnEvent. Thanks myers!

src/main/java/net/minecraft/server/World.java

@@ -18,6 +18,7 @@ import org.bukkit.event.block.BlockCanBuildEvent;
 import org.bukkit.event.block.BlockPhysicsEvent;
 import org.bukkit.event.block.SnowFormEvent;
 import org.bukkit.event.entity.CreatureSpawnEvent;
+import org.bukkit.event.entity.ItemSpawnEvent;
 import org.bukkit.event.weather.WeatherChangeEvent;
 import org.bukkit.event.weather.ThunderChangeEvent;
 // CraftBukkit end
@@ -820,6 +821,11 @@ public class World implements IBlockAccess {
                 if (event.isCancelled()) {
                     return false;
                 }
+        } else if (entity instanceof EntityItem) {
+            ItemSpawnEvent event = CraftEventFactory.callItemSpawnEvent((EntityItem) entity);
+            if (event.isCancelled()) {
+                return false;
+            }
         }
 
         if (entity instanceof EntityLiving && entity instanceof EntityWaterAnimal && !this.allowAnimals) {

src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java

@@ -7,6 +7,7 @@ import net.minecraft.server.EntityCreeper;
 import net.minecraft.server.EntityGhast;
 import net.minecraft.server.EntityGiantZombie;
 import net.minecraft.server.EntityHuman;
+import net.minecraft.server.EntityItem;
 import net.minecraft.server.EntityLiving;
 import net.minecraft.server.EntityMonster;
 import net.minecraft.server.EntityPig;
@@ -40,6 +41,7 @@ import org.bukkit.event.block.BlockDamageEvent;
 import org.bukkit.event.block.BlockPlaceEvent;
 import org.bukkit.event.entity.CreatureSpawnEvent;
 import org.bukkit.event.entity.EntityTameEvent;
+import org.bukkit.event.entity.ItemSpawnEvent;
 import org.bukkit.event.player.PlayerBucketEmptyEvent;
 import org.bukkit.event.player.PlayerBucketFillEvent;
 import org.bukkit.event.player.PlayerEvent;
@@ -243,4 +245,17 @@ public class CraftEventFactory {
         craftServer.getPluginManager().callEvent(event);
         return event;
     }
+
+    /**
+     * ItemSpawnEvent
+     */
+    public static ItemSpawnEvent callItemSpawnEvent(EntityItem entityitem) {
+        org.bukkit.entity.Entity entity = entityitem.getBukkitEntity();
+        CraftServer craftServer = (CraftServer) entity.getServer();
+
+        ItemSpawnEvent event = new ItemSpawnEvent(entity, entity.getLocation());
+
+        craftServer.getPluginManager().callEvent(event);
+        return event;
+    }
 }