[7418] Implement new log filter LogFilter_AchievementUpdates that let avoid achievments updates spam in logs if not needed. Author: VladimirMangos

Enabled by default.

--HG--
branch : trunk

src/shared/Log.h

@@ -31,7 +31,8 @@ enum LogFilters
 {
     LOG_FILTER_TRANSPORT_MOVES    = 1,
     LOG_FILTER_CREATURE_MOVES     = 2,
-    LOG_FILTER_VISIBILITY_CHANGES = 4
+    LOG_FILTER_VISIBILITY_CHANGES = 4,
+    LOG_FILTER_ACHIEVEMENT_UPDATES= 8
 };
 
 enum Color