Unit Testing for BIRD

- Unit Testing Framework (BirdTest)
 - Integration of BirdTest into the BIRD build system
 - Tests for several BIRD modules

 Based on squashed Pavel Tvrdik's int-test branch, updated for
 current int-new branch.

nest/route.h

@@ -12,7 +12,7 @@
 #include "lib/lists.h"
 #include "lib/resource.h"
 #include "sysdep/unix/timer.h"
-//#include "nest/protocol.h"
+#include "lib/net.h"
 
 struct ea_list;
 struct protocol;