Allow use effectIndex in spell_target_position.
Merge pull request #9790 from vlad852/master

spell_target_position - allow use effectIndex
Core: Declare some functions const and remove use of "using" directive in a couple of files
Core/Logging: Performance-related tweaks to logging system
    All sLog->out* functions (except outCommand atm) are replaced with TC_LOG_* macros.
    Memleak fix
Merge branch 'master' of https://github.com/TrinityCore/TrinityCore into arena