graphics/tex-mptopdf 2025 NetBSD

The mptopdf script does standalone conversion from mpost to PDF, using the supp-* and syst-* files. They also allow native MetaPost graphics inclusion in LaTeX (via pdftex.def) and ConTeXt. They can be used independently of the rest of ConTeXt, yet are maintained as part of it. So in TeX Live we pull them out to this separate package for the benefit of LaTeX users who do not install the rest of ConTeXt. This can be found on CTAN in macros/pdftex/graphics. The files originally come from the ConTeXt distribution. TL uses the repackaging from https://github.com/gucci-on-fleek/context-packaging.