Core/Maps: Unload transports in MapManager::UnloadAll instead of singleton destructor.

Core/Transports: Properly delink units from transports on transport desutruction. - Thanks to Shauren for help.
Core/ObjectAccessor: Unload corpse 'storage' in added UnloadAll method called in WorldRunnable postservice hook.
Core/Master: Change some postservice queries to syncrhonous (direct) execution to ensure execution on shutdown
Core/Master: Remove redundant calls to ACE::init and ACE::fini

These changes were made to fix crash/freeze issues on shutdown.

src/server/game/Globals/ObjectAccessor.h

@@ -40,6 +40,7 @@ class DynamicObject;
 class WorldObject;
 class Vehicle;
 class Map;
+class WorldRunnable;
 
 template <class T>
 class HashMapHolder
@@ -84,6 +85,7 @@ class HashMapHolder
 class ObjectAccessor
 {
     friend class ACE_Singleton<ObjectAccessor, ACE_Thread_Mutex>;
+    friend class WorldRunnable;
     ObjectAccessor();
     ~ObjectAccessor();
     ObjectAccessor(const ObjectAccessor&);
@@ -254,6 +256,9 @@ class ObjectAccessor
 
         typedef ACE_Thread_Mutex LockType;
 
+    protected:
+        void UnloadAll();
+
     private:
 
         Player2CorpsesMapType i_player2corpse;