Use patchelf on Linux only (#31)
Use patchelf on Linux only (#31)

This doesn't matter much while we are only building for Linux. However
once we start building for macOS or even Windows, we will want to ensure
that `patchelf` is only pulled on Linux. Hence we add this selector.
Though this is really a no-op as far as the Linux build is concerned.
(cherry picked from commit 4ca12243fdfd0b961513e965ec5ad126069e933a)

conda-forge/julia-feedstock