GServer and NPCServer update

[Admins]

The gserver and npcserver have been updated. The classic servers have been restarted, hosted and private servers can use the "/global servercontrol this restart" command. It is recommended to restart very soon because of a bug in the npcserver.

Updates:
- speed improvements in the gserver to handle more players
- fixed a bug with "this.savelocally=true;": updating a level with such npcs was duplicating them when the level was in memory
- onPlayerKilled(victim, killer) event for the classic hitpoint system
- when you load a player object with new TServerPlayer(accountname) (don't forget to call destroy() on it after using it) you can now access the level name via "TServerPlayer.levelname". You can also change that level for offline players although it's in beta (you can set x and y of offline players only to values between 0 and 64 so it will not work fine with gmaps).