New comment by q66 on void-packages repository

https://github.com/void-linux/void-packages/issues/27491#issuecomment-752677658

Comment:
the m4 files causing this should be fixed either way since they may be used for user built stuff and we don't want that in there either

and then for packages we need to fix it on per-package basis (I see no other way) and introduce a pkglint check to add /usr/lib/locale into forbidden directories (except for glibc-locales)