nmap: Fix build with latest clang&libc++

packages/nmap/nping-EchoServer.cc.patch

@@ -0,0 +1,33 @@
+diff -u -r ../nmap-7.70/nping/EchoServer.cc ./nping/EchoServer.cc
+--- ../nmap-7.70/nping/EchoServer.cc	2018-01-28 21:18:17.000000000 +0000
++++ ./nping/EchoServer.cc	2018-09-21 06:35:10.405423943 +0000
+@@ -281,12 +281,12 @@
+         server_addr6.sin6_len = sizeof(struct sockaddr_in6);
+     #endif
+     /* Bind to local address and the specified port */
+-    if( bind(master_sd, (struct sockaddr *)&server_addr6, sizeof(server_addr6)) != 0 ){
++    if( ::bind(master_sd, (struct sockaddr *)&server_addr6, sizeof(server_addr6)) != 0 ){
+         nping_warning(QT_3, "Failed to bind to source address %s. Trying to bind to port %d...", IPtoa(server_addr6.sin6_addr), port);
+         /* If the bind failed for the supplied address, just try again with in6addr_any */
+         if( o.spoofSource() ){
+             server_addr6.sin6_addr = in6addr_any;
+-            if( bind(master_sd, (struct sockaddr *)&server_addr6, sizeof(server_addr6)) != 0 ){
++            if( ::bind(master_sd, (struct sockaddr *)&server_addr6, sizeof(server_addr6)) != 0 ){
+                 nping_fatal(QT_3, "Could not bind to port %d (%s).", port, strerror(errno));
+             }else{ 
+                 nping_print(VB_1, "Server bound to port %d", port);
+@@ -319,12 +319,12 @@
+ #endif
+ 
+     /* Bind to local address and the specified port */
+-    if( bind(master_sd, (struct sockaddr *)&server_addr4, sizeof(server_addr4)) != 0 ){
++    if( ::bind(master_sd, (struct sockaddr *)&server_addr4, sizeof(server_addr4)) != 0 ){
+         nping_warning(QT_3, "Failed to bind to source address %s. Trying to bind to port %d...", IPtoa(server_addr4.sin_addr), port);
+         /* If the bind failed for the supplied address, just try again with in6addr_any */
+         if( o.spoofSource() ){
+             server_addr4.sin_addr.s_addr=INADDR_ANY;
+-            if( bind(master_sd, (struct sockaddr *)&server_addr4, sizeof(server_addr4)) != 0 ){
++            if( ::bind(master_sd, (struct sockaddr *)&server_addr4, sizeof(server_addr4)) != 0 ){
+                 nping_fatal(QT_3, "Could not bind to port %d (%s).", port, strerror(errno));
+             }else{
+                 nping_print(VB_1, "Server bound to port %d", port);