pkgsrc changes:
Drop all local patches as merged
Depend on upstreamed support for NetBSD
There is no particular upstream changelog, it's a first tag in 5 years
with all the patches applied. The major benefit is to unload software
from bundling a custom patched (without NetBSD support) version of nvtt.
NVIDIA Texture Tools is a collection of image processing and texture
manipulation tools, designed to be integrated in game tools and asset
conditioning pipelines. The primary features of the library are mipmap and
normal map generation, format conversion and DXT compression.