Implemented static paths for mobs (like Don Doom and Bad Max).

* Mobs now retreat to where they were when they were roaming; not their
spawn point
* /toggleai still sends them back to their spawn point however
* Fixed a bug where mobs would respawn where they were killed instead of
their proper spawn point
* Fixed mobs roaming despite simulatemobs being set to false
* Updated tdata submodule

src/CNStructs.hpp

@@ -34,6 +34,7 @@ std::string U16toU8(char16_t* src);
 size_t U8toU16(std::string src, char16_t* des, size_t max); // returns number of char16_t that was written at des
 time_t getTime();
 time_t getTimestamp();
+void terminate(int);
 
 // The PROTOCOL_VERSION definition is defined by the build system.
 #if !defined(PROTOCOL_VERSION)