Core/Misc: Fixing warnings detected by Visual Studio 2015 compiler

(cherry picked from commit a22e4e121a1e54b2f4154d59623ee4a94a449176)

Conflicts:
	cmake/compiler/msvc/settings.cmake
	src/server/game/DataStores/DBCStores.cpp
	src/server/game/Entities/GameObject/GameObject.cpp
	src/server/game/Entities/Object/Object.cpp
	src/server/game/Entities/Object/Object.h
	src/server/game/Entities/Pet/Pet.cpp
	src/server/game/Entities/Player/Player.cpp
	src/server/game/Entities/Unit/Unit.cpp
	src/server/game/Garrison/Garrison.cpp
	src/server/game/Garrison/GarrisonMgr.cpp
	src/server/game/Globals/ObjectMgr.cpp
	src/server/game/Globals/ObjectMgr.h
	src/server/game/Guilds/GuildMgr.cpp
	src/server/game/Handlers/CharacterHandler.cpp
	src/server/game/Handlers/QueryHandler.cpp
	src/server/game/Handlers/QuestHandler.cpp
	src/server/game/Handlers/SpellHandler.cpp
	src/server/game/Server/Packets/ChannelPackets.h
	src/server/game/Server/Packets/PartyPackets.cpp
	src/server/game/Server/WorldSession.h
	src/server/game/Spells/Spell.cpp
	src/server/game/Spells/SpellInfo.cpp
	src/server/game/Spells/SpellScript.cpp
	src/server/scripts/Commands/cs_list.cpp

src/server/game/Spells/SpellScript.cpp

@@ -84,9 +84,9 @@ uint8 _SpellScript::EffectHook::GetAffectedEffectsMask(SpellInfo const* spellEnt
     return mask;
 }
 
-bool _SpellScript::EffectHook::IsEffectAffected(SpellInfo const* spellEntry, uint8 effIndex)
+bool _SpellScript::EffectHook::IsEffectAffected(SpellInfo const* spellEntry, uint8 effIndexToCheck)
 {
-    return (GetAffectedEffectsMask(spellEntry) & 1 << effIndex) != 0;
+    return (GetAffectedEffectsMask(spellEntry) & 1 << effIndexToCheck) != 0;
 }
 
 std::string _SpellScript::EffectHook::EffIndexToString()
@@ -182,14 +182,14 @@ std::string SpellScript::EffectHandler::ToString()
     return "Index: " + EffIndexToString() + " Name: " +_SpellScript::EffectNameCheck::ToString();
 }
 
-bool SpellScript::EffectHandler::CheckEffect(SpellInfo const* spellEntry, uint8 effIndex)
+bool SpellScript::EffectHandler::CheckEffect(SpellInfo const* spellEntry, uint8 effIndexToCheck)
 {
-    return _SpellScript::EffectNameCheck::Check(spellEntry, effIndex);
+    return _SpellScript::EffectNameCheck::Check(spellEntry, effIndexToCheck);
 }
 
-void SpellScript::EffectHandler::Call(SpellScript* spellScript, SpellEffIndex effIndex)
+void SpellScript::EffectHandler::Call(SpellScript* spellScript, SpellEffIndex effIndexToHandle)
 {
-    (spellScript->*pEffectHandlerScript)(effIndex);
+    (spellScript->*pEffectHandlerScript)(effIndexToHandle);
 }
 
 SpellScript::HitHandler::HitHandler(SpellHitFnType _pHitHandlerScript)
@@ -212,7 +212,7 @@ std::string SpellScript::TargetHook::ToString()
     return oss.str();
 }
 
-bool SpellScript::TargetHook::CheckEffect(SpellInfo const* spellEntry, uint8 effIndex)
+bool SpellScript::TargetHook::CheckEffect(SpellInfo const* spellEntry, uint8 effIndexToCheck)
 {
     if (!targetType)
         return false;
@@ -758,9 +758,9 @@ void AuraScript::AuraDispelHandler::Call(AuraScript* auraScript, DispelInfo* _di
 AuraScript::EffectBase::EffectBase(uint8 _effIndex, uint16 _effName)
     : _SpellScript::EffectAuraNameCheck(_effName), _SpellScript::EffectHook(_effIndex) { }
 
-bool AuraScript::EffectBase::CheckEffect(SpellInfo const* spellEntry, uint8 effIndex)
+bool AuraScript::EffectBase::CheckEffect(SpellInfo const* spellEntry, uint8 effIndexToCheck)
 {
-    return _SpellScript::EffectAuraNameCheck::Check(spellEntry, effIndex);
+    return _SpellScript::EffectAuraNameCheck::Check(spellEntry, effIndexToCheck);
 }
 
 std::string AuraScript::EffectBase::ToString()