build: deal with recent glibc sunrpc header removal
We need to rely on libtirpc or libntirpc to be around in that case.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13238
BUG: https://bugzilla.samba.org/show_bug.cgi?id=10976
Guenther
Pair-Programmed-With: Andreas Schneider <asn@samba.org>
Signed-off-by: Guenther Deschner <gd@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>
(cherry picked from commit
ee0be7eb723be1420fd601ea1abe0af748562953)