Log Message:
libspf2: link with glibc>=2.34 and build with musl libc.

Newer glibc removes visibility of __dn_expand and __dn_skipname.
Borrow Fedora's fix: stop linking with libreplace for most platforms
(except OpenBSD).

For musl, provide a fallback definition of NETDB_SUCCESS.

Fixes build: Void Linux, Ubuntu 22, Arch, CentOS 9.
Continues to build: Ubuntu 20, CentOS 8 and 7, Debian, Tribblix, macOS,
NetBSD, FreeBSD, OpenBSD.

Bump PKGREVISION.