Fix TOS stuff for BSD

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@909 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_iax.c

@@ -32,6 +32,7 @@
 #include <arpa/inet.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <netinet/in_systm.h>
 #include <netinet/ip.h>
 #include <sys/time.h>
 #include <sys/signal.h>
@@ -45,6 +46,10 @@
 
 #include "iax.h"
 
+#ifndef IPTOS_MINCOST
+#define IPTOS_MINCOST 0x02
+#endif
+
 /*
  * Uncomment to try experimental IAX bridge optimization,
  * designed to reduce latency when IAX calls cannot