add NDNCERT_prefix and small fixes

Change-Id: I7ad5e3258599e62cce437555e64a3b461b08f8e6
diff --git a/src/detail/ndncert-common.hpp b/src/detail/ndncert-common.hpp
index 1773bf9..003b31f 100644
--- a/src/detail/ndncert-common.hpp
+++ b/src/detail/ndncert-common.hpp
@@ -23,16 +23,16 @@
 
 #include "ndncert-config.hpp"
 
-#ifdef HAVE_TESTS
-#define VIRTUAL_WITH_TESTS virtual
-#define PUBLIC_WITH_TESTS_ELSE_PROTECTED public
-#define PUBLIC_WITH_TESTS_ELSE_PRIVATE public
-#define PROTECTED_WITH_TESTS_ELSE_PRIVATE protected
+#ifdef NDNCERT_HAVE_TESTS
+#define NDNCERT_VIRTUAL_WITH_TESTS virtual
+#define NDNCERT_PUBLIC_WITH_TESTS_ELSE_PROTECTED public
+#define NDNCERT_PUBLIC_WITH_TESTS_ELSE_PRIVATE public
+#define NDNCERT_PROTECTED_WITH_TESTS_ELSE_PRIVATE protected
 #else
-#define VIRTUAL_WITH_TESTS
-#define PUBLIC_WITH_TESTS_ELSE_PROTECTED protected
-#define PUBLIC_WITH_TESTS_ELSE_PRIVATE private
-#define PROTECTED_WITH_TESTS_ELSE_PRIVATE private
+#define NDNCERT_VIRTUAL_WITH_TESTS
+#define NDNCERT_PUBLIC_WITH_TESTS_ELSE_PROTECTED protected
+#define NDNCERT_PUBLIC_WITH_TESTS_ELSE_PRIVATE private
+#define NDNCERT_PROTECTED_WITH_TESTS_ELSE_PRIVATE private
 #endif
 
 #include <cstddef>