Tools/MeshExtractor: Fixed Doodads and WMOs in the terrain.
Cleaned up a little.
Tools/MeshExtractor: Some more cleanup and memory management improvements.
Tools/MeshExtractor: Removed some redundant code
Tools/MeshExtractor: Implemented mmap mesh generation for instances (They do not have ADT files, they're just a big WMO).
Cleaned up some things and fixed some errors.
ToDo:
* Test this a bit more.
* Cleanup the codebase for this, remove duplicated code.
Core/SAI: Add 'playerOnly' parameters to SMART_TARGET_CLOSEST_ENEMY and SMART_TARGET_CLOSEST_FRIENDLY. Wiki is updated accordingly.
DB/Loot: Fix Satchel of Helpful Goods

Closes #10552
Closes #10292
DB/Loot: correct petdrops from the fishingbags and cleanup the misused reference

Closes #10975
DB/SAI: Correction on waypoints for quest npc.

Closes #10937
Core/RBAC: Fix errors in RBAC sql related to ea2fe0217d