[10935] Move script calls to ScriptMgr

- Script library presence is now optional.
- Some script hooks have new names. Scripting libraries need to be adjusted accordingly.

Signed-off-by: zergtmn <zerg@myisp.com>

src/game/SpellHandler.cpp

@@ -25,7 +25,7 @@
 #include "Log.h"
 #include "Opcodes.h"
 #include "Spell.h"
-#include "ScriptCalls.h"
+#include "ScriptMgr.h"
 #include "Totem.h"
 #include "SpellAuras.h"
 
@@ -177,7 +177,7 @@ void WorldSession::HandleUseItemOpcode(WorldPacket& recvPacket)
     }
 
     //Note: If script stop casting it must send appropriate data to client to prevent stuck item in gray state.
-    if(!Script->ItemUse(pUser,pItem,targets))
+    if (!sScriptMgr.OnItemUse(pUser, pItem, targets))
     {
         // no script or script not process request by self
         pUser->CastItemUseSpell(pItem,targets,cast_count,glyphIndex);