New review comment by non-Jedi on void-packages repository

https://github.com/void-linux/void-packages/pull/24097#discussion_r476697359

Comment:
We either need to let julia vendor in its own openblas or provide a system [openblas it can link against using 64-bit integers (ILP64)](https://github.com/JuliaLang/julia/blob/master/doc/build/distributing.md#notes-on-blas-and-lapack) (this change was made in https://github.com/void-linux/void-packages/pull/20353 because otherwise some 3rd-party julia packages which expect ILP64 don't work, e.g. Arpack.jl). Long term, it would be good to provide this as a system library [like Fedora does](https://discourse.julialang.org/t/no-documentation-for-the-state-of-patches-for-dependencies-of-julia/44735/3), but I haven't had time to work on that change yet.