Fix Corefile parsing

Fix some file/secondary issues when parsing a Corefile, also allow

for multiple origins to be specified. Also don't fail on startup when

a zonetransfer fails.



Fixes: #54

server/server.go

@@ -273,6 +273,7 @@ func (s *Server) ServeDNS(w dns.ResponseWriter, r *dns.Msg) {
 	b := make([]byte, len(q))
 	off, end := 0, false
 	ctx := context.Background()
+
 	for {
 		l := len(q[off:])
 		for i := 0; i < l; i++ {