Need a couple more include files to compile on FreeBSD.

src/cjson.c

@@ -30,6 +30,7 @@
 #include <float.h>
 #include <limits.h>
 #include <ctype.h>
+#include <sys/types.h>
 #include "cjson.h"
 
 

src/t_uuid.c

@@ -10,6 +10,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/time.h>
 
 #include "iperf_util.h"