Extract mdns-libnss-mdns from the main package so we can mark it as an
RPROVIDE for libnss-mdns (matching avahi-libnss-mdns) and then
RRECOMMEND this when building with glibc.
Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>