[PATCH 6/6] Add configure check for members of dirent for use in io/readdir.c

[Christoph Hellwig]

I think we're having a deeper issue here.  For an LFS build we
absolutely should have these values as the kernel dirent64 has them.

Either we manage to not pull in the LFS version of readdir/getdents
or musl is doing something inredibly stupid.  Can you investigate if
and why we're not using the LFS getdents64 here?