Be more accepting of NIF files
Some mods use NIF files other with a version other than default Morrowind. Support these mod files.
Ex: Morrowind - Sounds and Graphics Overhaul: https://www.youtube.com/watch?v=-ZKHu5n8TiI
It would be nice to support Skywind's assets, but that's a long term goal.
(RM-1852 from redmine: created on 2014-08-26 by Arthur Moore, , closed on 2015-03-11 by nobody)