[12170] Add support to link summoned npcs with following

Thanks to crackm for insisting that this needs a core change and testing

src/game/Object.cpp

@@ -42,6 +42,7 @@
 #include "ObjectPosSelector.h"
 #include "TemporarySummon.h"
 #include "movement/packet_builder.h"
+#include "CreatureLinkingMgr.h"
 
 Object::Object()
 {
@@ -1723,11 +1724,15 @@ Creature* WorldObject::SummonCreature(uint32 id, float x, float y, float z, floa
     // Active state set before added to map
     pCreature->SetActiveObjectState(asActiveObject);
 
-    pCreature->Summon(spwtype, despwtime);
+    pCreature->Summon(spwtype, despwtime);                  // Also initializes the AI and MMGen
 
     if (GetTypeId() == TYPEID_UNIT && ((Creature*)this)->AI())
         ((Creature*)this)->AI()->JustSummoned(pCreature);
 
+    // Creature Linking, Initial load is handled like respawn
+    if (pCreature->IsLinkingEventTrigger())
+        GetMap()->GetCreatureLinkingHolder()->DoCreatureLinkingEvent(LINKING_EVENT_RESPAWN, pCreature);
+
     // return the creature therewith the summoner has access to it
     return pCreature;
 }

src/shared/revision_nr.h

@@ -1,4 +1,4 @@
 #ifndef __REVISION_NR_H__
 #define __REVISION_NR_H__
- #define REVISION_NR "12169"
+ #define REVISION_NR "12170"
 #endif // __REVISION_NR_H__