DB/SlavePens: Corrected a lot of wrong Slave Pens spawns
DB/Creature: Fix even more creature templates
DB/Creature: Fix even more creature templates
DB/Gossip: Fix "Gyll <Gryphon Master>" Gossip
Closes #11956
Core/Misc: Remove obsolete C++11 backward compatibility macros

OVERRIDE, FINAL, DELETE_MEMBER
DB/Gossip: Fix "Alchemist Pestlezugg <Alchemy Supplies>" gossip
Closes #11958
Merge pull request #11950 from Dehravor/override-final-delete

Core/Misc: Remove obsolete C++11 backward compatibility macros
DB/Loot: Fix drops of Fragment of Val'anyr

By dr-j, closes #11959.