Add axfr example prog

_examples/axfr/Makefile

@@ -0,0 +1,8 @@
+# Copyright 2009 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+include $(GOROOT)/src/Make.inc
+TARG=axfr
+GOFILES=axfr.go
+DEPS=../../
+include $(GOROOT)/src/Make.cmd

_examples/axfr/axfr.go

@@ -0,0 +1,22 @@
+package main
+
+import (
+        "fmt"
+        "dns"
+        "dns/resolver"
+)
+
+func main() {
+	res := new(resolver.Resolver)
+	ch := res.NewXfer()
+
+	res.Servers = []string{"127.0.0.1"}
+	m := new(dns.Msg)
+	m.Question = make([]dns.Question, 1)
+	m.Question[0] = dns.Question{"atoom.net", dns.TypeAXFR, dns.ClassINET}
+
+        ch <- resolver.DnsMsg{m, nil}
+	for dm := range ch {
+                fmt.Printf("%v\n",dm.Dns)
+        }
+}

resolver/Makefile

@@ -8,5 +8,4 @@ TARG=dns/resolver
 GOFILES=\
 	resolver.go\
 
-#DEPS=../
 include $(GOROOT)/src/Make.pkg