Replaced time(NULL) on sGameTime.GetGameTime() this is used for better performance.

Original Timer.h divided into 2 parts. Shared project has no need to know about GameTime Singleton.
2 Identical structures with different types are now replaced with one generic templated structure and 2 typedefs.

--HG--
branch : trunk

src/game/BattleGround.cpp

@@ -35,6 +35,7 @@
 #include "Object.h"
 #include "SpellAuras.h"
 #include "Util.h"
+#include "TimeMgr.h"
 
 namespace Trinity
 {
@@ -259,7 +260,7 @@ void BattleGround::Update(uint32 diff)
         BattleGroundPlayerMap::iterator itr = m_Players.find(*(m_OfflineQueue.begin()));
         if (itr != m_Players.end())
         {
-            if (itr->second.OfflineRemoveTime <= sWorld.GetGameTime())
+            if (itr->second.OfflineRemoveTime <= sGameTime.GetGameTime())
             {
                 RemovePlayerAtLeave(itr->first, true, true);// remove player from BG
                 m_OfflineQueue.pop_front();                 // remove from offline queue
@@ -1266,7 +1267,7 @@ void BattleGround::EventPlayerLoggedOut(Player* player)
 {
     // player is correct pointer, it is checked in WorldSession::LogoutPlayer()
     m_OfflineQueue.push_back(player->GetGUID());
-    m_Players[player->GetGUID()].OfflineRemoveTime = sWorld.GetGameTime() + MAX_OFFLINE_TIME;
+    m_Players[player->GetGUID()].OfflineRemoveTime = sGameTime.GetGameTime() + MAX_OFFLINE_TIME;
     if (GetStatus() == STATUS_IN_PROGRESS)
     {
         if (isBattleGround())