Updated setting file path for textures that can not be located due to
being inside compressed library.
version 12-83 nif import with textures
fix for material naming of version 12-83 nif mesh objects, added more
variables to import code.
further progress and clean up for 12-84 nif import and some work on
export
Added Custom values for nif version, user version, and user version 2.
renamed a few variables
Slight redesign of texture import to reduce duplicated code
Reconnect NiTextureProperty using the revised texture import
Created a block in nif_common to convert the nif version Uint hex to
user readable string.
Added version customs, and updated import and export to better handle
current nif files