[12365] fix Singleton compile error on clang

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Автор: faramir118


<pre>m src/framework/Dynamic/FactoryHolder.h
m src/framework/Policies/Singleton.h
- src/framework/Policies/SingletonImp.h
m src/game/AccountMgr.cpp
m src/game/AchievementMgr.cpp
m src/game/AuctionHouseBot/AuctionHouseBot.cpp
m src/game/AuctionHouseMgr.cpp
m src/game/BattleGround/BattleGroundMgr.cpp
m src/game/Calendar.h
m src/game/ChannelMgr.cpp
m src/game/Creature.cpp
m src/game/CreatureAISelector.cpp
m src/game/CreatureEventAIMgr.cpp
m src/game/CreatureLinkingMgr.cpp
m src/game/DBCStores.cpp
m src/game/GMTicketMgr.cpp
m src/game/GameEventMgr.cpp
m src/game/GridMap.cpp
m src/game/GuildMgr.cpp
m src/game/MapManager.cpp
m src/game/MassMailMgr.cpp
m src/game/ObjectAccessor.cpp
m src/game/ObjectMgr.cpp
m src/game/OutdoorPvP/OutdoorPvPMgr.cpp
m src/game/PoolManager.cpp
m src/game/ScriptMgr.cpp
m src/game/SkillDiscovery.cpp
m src/game/SocialMgr.cpp
m src/game/Spell.cpp
m src/game/SpellAuras.cpp
m src/game/WaypointManager.cpp
m src/game/World.cpp
m src/mangosd/Master.cpp
m src/realmd/RealmList.cpp
m src/shared/Config/Config.cpp
m src/shared/Database/DatabaseMysql.cpp
m src/shared/Database/DatabasePostgre.cpp
m src/shared/Log.cpp
m src/shared/revision_nr.h
</pre>
<pre style='white-space:pre-wrap;width:81ex'>[12365] fix Singleton compile error on clang

some members of Singleton were implicitly specialized in the static function
definitions, which conflicted with the initialization of said members (clang
saw it as a redefinition of the specialization)

Signed-off-by: DasBlub <DasBlub@gmail.com></pre>


Подробнее... (https://github.com/cmangos/mangos-wotlk/commit/772a5bb3ca806f7cb344cddb9f93d1f8c7e42f07)