New GServer and NPCServer

[Admins]

The gserver and npcserver have been updated. Right now only the login server has been restarted to enable the updates, but other servers will also be restarted in the following days.

Updates:
- The graal server better detects disconnections
- The server doesn't crash anymore when two gmaps contain the same level
- The command /scriptscan can now use the script type "scripts" to only scan classes, npcs and weapons, and not levels.
- It fixes a bug which could crash the npcserver if you delete objects
- If you create a TServerPlayer and join a class, and then call destroy(), then it's correctly destroyed.
- New server option for improving speed if you use many TStaticVars (>1000): if you are sure to not use cycling references then you can set complexgarbagecollection=false to speed up the garbage collection