build: prepend "NFD_" to various macro names to avoid conflicts

Change-Id: Icc370968e3d38fef80ece35a2aed56450f54b653
diff --git a/daemon/face/face-system.hpp b/daemon/face/face-system.hpp
index 84a2dce..3b2e3dc 100644
--- a/daemon/face/face-system.hpp
+++ b/daemon/face/face-system.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2019,  Regents of the University of California,
+ * Copyright (c) 2014-2021,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -100,7 +100,7 @@
     bool isDryRun;
   };
 
-PUBLIC_WITH_TESTS_ELSE_PRIVATE:
+NFD_PUBLIC_WITH_TESTS_ELSE_PRIVATE:
   ProtocolFactoryCtorParams
   makePFCtorParams();
 
@@ -109,7 +109,7 @@
   processConfig(const ConfigSection& configSection, bool isDryRun,
                 const std::string& filename);
 
-PUBLIC_WITH_TESTS_ELSE_PRIVATE:
+NFD_PUBLIC_WITH_TESTS_ELSE_PRIVATE:
   /** \brief config section name => protocol factory
    */
   std::map<std::string, unique_ptr<ProtocolFactory>> m_factories;