[6828] Added script name indexing for creature, gameobject, item, areatrigger and instance scripts.

* loaded all distinct script names into one vector at server startup
* added custom loaders to convert the script names to indices
* converted all the script lookup functions to use the index instead of the name

src/bindings/universal/Scripts/sc_default.cpp

@@ -115,5 +115,5 @@ void AddSC_default()
     newscript->pGOQuestAccept        = &GOQuestAccept_default;
     newscript->pGOChooseReward       = &GOChooseReward_default;
 
-    m_scripts[nrscripts++] = newscript;
+    newscript->registerSelf();
 }