define _DEFAULT_SOURCE to avoid build warnings

src/dns/res.c

@@ -4,6 +4,7 @@
  * Copyright (C) 2010 Creytiv.com
  */
 #define _BSD_SOURCE 1
+#define _DEFAULT_SOURCE 1
 #include <sys/types.h>
 #include <netinet/in.h>
 #include <arpa/nameser.h>

src/net/linux/rt.c

@@ -4,6 +4,7 @@
  * Copyright (C) 2010 Creytiv.com
  */
 #define _BSD_SOURCE 1
+#define _DEFAULT_SOURCE 1
 #include <string.h>
 #include <unistd.h>
 #define __USE_POSIX 1  /**< Use POSIX flag */

src/net/net.c

@@ -4,6 +4,7 @@
  * Copyright (C) 2010 Creytiv.com
  */
 #define _BSD_SOURCE 1
+#define _DEFAULT_SOURCE 1
 #include <stdlib.h>
 #include <string.h>
 #if !defined(WIN32) && !defined(CYGWIN)

src/net/rt.c

@@ -4,6 +4,7 @@
  * Copyright (C) 2010 Creytiv.com
  */
 #define _BSD_SOURCE 1
+#define _DEFAULT_SOURCE 1
 #include <re_types.h>
 #include <re_fmt.h>
 #include <re_mbuf.h>

src/sa/pton.c

@@ -8,6 +8,7 @@
 #include <windows.h>
 #else
 #define _BSD_SOURCE 1    /**< Use BSD code */
+#define _DEFAULT_SOURCE 1
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <arpa/inet.h>

src/sa/sa.c

@@ -4,6 +4,7 @@
  * Copyright (C) 2010 Creytiv.com
  */
 #define _BSD_SOURCE 1
+#define _DEFAULT_SOURCE 1
 #include <string.h>
 #include <re_types.h>
 #include <re_fmt.h>

src/udp/mcast.c

@@ -5,6 +5,7 @@
  */
 
 #define _BSD_SOURCE 1
+#define _DEFAULT_SOURCE 1
 #include <re_types.h>
 #include <re_fmt.h>
 #include <re_sa.h>