COMP: Mssing stdlib.h Complain about EXIT_SUCCESS under linux

Libs/Messaging/Core/Testing/ctkMessagingServerTest1.cpp

@@ -23,6 +23,7 @@
 #include "ctkModelTester.h"
 
 // STD includes
+#include <stdlib.h>
 #include <iostream>
 
 //-----------------------------------------------------------------------------