Core: Move FormationMgr to namespace

Also...
- Warning fixes
- Make Singleton constructors private

src/server/game/OutdoorPvP/OutdoorPvPMgr.h

@@ -38,14 +38,13 @@ struct OutdoorPvPData
 // class to handle player enter / leave / areatrigger / GO use events
 class OutdoorPvPMgr
 {
-    public:
+    friend class ACE_Singleton<OutdoorPvPMgr, ACE_Null_Mutex>;
 
-        // ctor
+    private:
         OutdoorPvPMgr();
-
-        // dtor
         ~OutdoorPvPMgr();
 
+    public:
         // create outdoor pvp events
         void InitOutdoorPvP();
 
@@ -79,12 +78,11 @@ class OutdoorPvPMgr
 
         void HandleDropFlag(Player* plr, uint32 spellId);
 
+    private:
         typedef std::vector<OutdoorPvP*> OutdoorPvPSet;
         typedef std::map<uint32 /* zoneid */, OutdoorPvP*> OutdoorPvPMap;
         typedef std::map<OutdoorPvPTypes, OutdoorPvPData*> OutdoorPvPDataMap;
 
-    private:
-
         // contains all initiated outdoor pvp events
         // used when initing / cleaning up
         OutdoorPvPSet  m_OutdoorPvPSet;