[7607] Improvements in support some generic achievement classes Author: VladimirMangos

* Implement support achievements with refAchievement field != 0, that have criterias stored in achievement refAchievement.
    * Implement support achievement complete req. with specific count of completed critirias.
    * Avoid full achievement list scan at search achievement associated with criteria.

--HG--
branch : trunk

src/game/BattleGroundMgr.cpp

@@ -1719,7 +1719,7 @@ void BattleGroundMgr::CreateInitialBattleGrounds()
 
         bar.step();
 
-        sLog.outString("");
+        sLog.outString();
         sLog.outErrorDb(">> Loaded 0 battlegrounds. DB table `battleground_template` is empty.");
         return;
     }
@@ -1815,7 +1815,7 @@ void BattleGroundMgr::CreateInitialBattleGrounds()
 
     delete result;
 
-    sLog.outString("");
+    sLog.outString();
     sLog.outString( ">> Loaded %u battlegrounds", count );
 }
 
@@ -2097,7 +2097,7 @@ void BattleGroundMgr::LoadBattleMastersEntry()
         barGoLink bar( 1 );
         bar.step();
 
-        sLog.outString("");
+        sLog.outString();
         sLog.outString( ">> Loaded 0 battlemaster entries - table is empty!" );
         return;
     }
@@ -2125,6 +2125,6 @@ void BattleGroundMgr::LoadBattleMastersEntry()
 
     delete result;
 
-    sLog.outString("");
+    sLog.outString();
     sLog.outString( ">> Loaded %u battlemaster entries", count );
 }