First iteration of mbuf, message buffer api

test/test_runner.c

@@ -19,6 +19,7 @@ extern Suite *clock_suite(void);
 extern Suite *seq_suite(void);
 extern Suite *sat_math_suite(void);
 extern Suite *timers_suite(void);
+extern Suite *mbuf_suite(void);
 
 static suite_func suites[] = {
     bitvec_suite,
@@ -33,7 +34,8 @@ static suite_func suites[] = {
     clock_suite,
     seq_suite,
     sat_math_suite,
-    timers_suite
+    timers_suite,
+    mbuf_suite
 };
 
 int