Updates for GServer and NPCServer

[Admins]

This is not directly script related, but something for developers in general. You eventually need to restart the gserver or npcserver to enable the new stuff.
GServer updates:
- warpto=false and ignorewarpto=true options (are the same, but the second doesn't display an error message)
- warpto is not accepted when the player types illegal coordinates (like warpto blah blah)
- toguild messages are handed " better (displayed correctly in v4, an additional \ in the text will appear in v2)
- on the npcserver levels are not removed from the memory ("swapped out") when a player is still idling there after the normal timeout (5 minutes), so preventing problems of disappearing npcs
- the colors of npcs are sent on first write, so it's easier to do npcs with newbie colors
- some security problems with scripted RC have been fixed (all servers using new scripting engine have already been restarted to make this take effect)
- ghosts can do serverwarp now, so the serverlist is working on all servers