On non-musl Linux, strerror_r should be linked to __xpg_strerror_r
On non-musl Linux, strerror_r should be linked to __xpg_strerror_r

Signed-off-by: NODA, Kai <a445972a03eaa731f8b4469e4f864a9a57c01ed3@gmail.com>

rust-lang-nursery/libc,rust-lang/libc,zethra/libc,cactorium/libc,philippkeller/libc,anatol/libc,mneumann/libc,cactorium/libc,rust-lang/libc,mneumann/libc,superriva/libc,anatol/libc,superriva/libc,rust-lang/libc,cactorium/libc,mneumann/libc,zethra/libc,philippkeller/libc,anatol/libc,rust-lang-nursery/libc,philippkeller/libc,superriva/libc,rust-lang-nursery/libc,zethra/libc