Robert Edmonds. The --enable-dnstap needs libfstrm and protobuf-c.
It is BSD licensed (see dnstap/dnstap.c).
Building with --enable-dnstap needs pkg-config with this patch.
- Noted dnstap in doc/README and doc/CREDITS.
git-svn-id: https://unbound.nlnetlabs.nl/svn/trunk@3206 be551aaa-1e26-0410-a405-d3ace91eadb9