New comment by tornaria on void-packages repository

https://github.com/void-linux/void-packages/pull/32601#issuecomment-903186636

Comment:
>     * you need to move everything except `libm4ri-0.0.20200125.so` to a subpackage `m4ri-devel`. Check the example in `Manual.md` (search for "Subpackages"). I think the foo-devel subpkg example should work almost verbatim.

Same for `m4rie`.