Using Java ThreadPool + Mob Skills & Event Instance patch + Eqp Merge

Server source now uses Java ThreadPool, recycling used thread resources for next uses.
Added Grenade visual effect for other players.
Implemented an attempt towards unsynced mob behavior, where reportedly players were able to pin same mob in different sections of the map.
Solved several deadlock issues, mostly regarding character synchronized methods, event instance scripts and player/item vision-unvision.
Solved an issue where mobs would not cast some skills of it's skillset. Frequent behavior on low-leveled mobs.
Fixed a bug on 2nd Maker quest where players could complete it by merely disassembling an equipment.
New custom mechanic: equipment merge. Similarly to the Bazaar NPC, every equipment after the selected one is used up, and a fraction of their stat amounts are used as stat gains on the currently equipped items. If restrictions are enabled, players must be high-leveled and Maker lv3 to use it.
Skill Storm Break no longer uses up arrows.
Added a server flag to allow access for all Aran job skills from the beginning.
Implemented Battleship and Super Transformation questline scripts.
Fixed a desynchronization within pet position and cash inventory position, that could potentially lead to some inventory issues until relogin.
Improved timestamp handling in some handler classes. Spam detection is entirely a server-side matter, hence removed usage of client-sided timestamp content.
Refactored some pet response packets, improving some of their behaviors.
Fixed some quest issues: Maker lv1 and Omega Sector meteorite one.

src/client/MapleClient.java

@@ -74,6 +74,7 @@ import scripting.quest.QuestActionManager;
 import scripting.quest.QuestScriptManager;
 import server.life.MapleMonster;
 import server.MapleTrade;
+import server.ThreadManager;
 import server.maps.*;
 import server.quest.MapleQuest;
 
@@ -159,7 +160,7 @@ public class MapleClient {
         }
 
 	public void sendCharList(int server) {
-		this.announce(MaplePacketCreator.getCharList(this, server));
+		this.announce(MaplePacketCreator.getCharList(this, server, 0));
 	}
 
 	public List<MapleCharacter> loadCharacters(int serverId) {
@@ -878,11 +879,33 @@ public class MapleClient {
 		}
 	}
 
-	public final synchronized void disconnect(boolean shutdown, boolean cashshop) {//once per MapleClient instance
+        public final void disconnect(final boolean shutdown, final boolean cashshop) {
+                if (isDisconnecting()) {
+                        ThreadManager.getInstance().newTask(new Runnable() {
+                                @Override
+                                public void run() {
+                                        disconnectInternal(shutdown, cashshop);
+                                }
+                        });
+                }
+        }
+        
+        public final void forceDisconnect() {
+                if (isDisconnecting()) {
+                        disconnectInternal(true, false);
+                }
+        }
+        
+        private synchronized boolean isDisconnecting() {
                 if (disconnecting) {
-			return;
+			return false;
 		}
+                
 		disconnecting = true;
+                return true;
+        }
+        
+	private void disconnectInternal(boolean shutdown, boolean cashshop) {//once per MapleClient instance
 		if (player != null && player.isLoggedin() && player.getClient() != null) {
 			final int messengerid = player.getMessenger() == null ? 0 : player.getMessenger().getId();
 			//final int fid = player.getFamilyId();