New comment by q66 on void-packages repository

https://github.com/void-linux/void-packages/pull/24254#issuecomment-673254502

Comment:
looking further at how it works, if we wanted to include this, definitely not in this manner - instead we'd do it like alpine and have the compiler implicitly inject it (with `-isystem` rather than `-I`) as including it in normal flags via `-I` is just asking for trouble (for one we want to treat them like system headers, to avoid potential warnings and so on...)