Rename 'Hostil' to 'Hostile'

Credits to NoFantasy (Mangos)
Closes issue #411

--HG--
branch : trunk

src/game/BattleGround.cpp

@@ -767,7 +767,7 @@ void BattleGround::EndBattleGround(uint32 winner)
         {
             //needed cause else in av some creatures will kill the players at the end
             plr->CombatStop();
-            plr->getHostilRefManager().deleteReferences();
+            plr->getHostileRefManager().deleteReferences();
         }
 
         //this line is obsolete - team is set ALWAYS