return the updated call-by-pointer args from stub to runner

another contained, minor change is:
- define and use a lib for protobuf messages

Change-Id: I91908a9e7600e77b21f011997cdba1a96df9f121
diff --git a/sysfuzzer/vtscompiler/code_gen/CodeGenBase.h b/sysfuzzer/vtscompiler/code_gen/CodeGenBase.h
index de32204..1c0b293 100644
--- a/sysfuzzer/vtscompiler/code_gen/CodeGenBase.h
+++ b/sysfuzzer/vtscompiler/code_gen/CodeGenBase.h
@@ -22,7 +22,7 @@
 #include <sstream>
 #include <string>
 
-#include "test/vts/sysfuzzer/common/proto/InterfaceSpecificationMessage.pb.h"
+#include "test/vts/runners/host/proto/InterfaceSpecificationMessage.pb.h"
 
 using namespace std;