Add "NAC_" prefix to access specifier macros to avoid conflicts

Also, sync boost.py with ndn-cxx and fix doxygen configuration

Refs: #4908
Change-Id: I388005810aac18aaea749a57666438bcc5de7811
diff --git a/src/encryptor.hpp b/src/encryptor.hpp
index 2b82d31..21a9297 100644
--- a/src/encryptor.hpp
+++ b/src/encryptor.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
- * Copyright (c) 2014-2018, Regents of the University of California
+/*
+ * Copyright (c) 2014-2019, Regents of the University of California
  *
  * NAC library is free software: you can redistribute it and/or modify it under the
  * terms of the GNU Lesser General Public License as published by the Free Software
@@ -127,7 +127,7 @@
   bool
   makeAndPublishCkData(const ErrorCallback& onFailure);
 
-PUBLIC_WITH_TESTS_ELSE_PRIVATE:
+NAC_PUBLIC_WITH_TESTS_ELSE_PRIVATE:
   Name m_accessPrefix;
   Name m_ckPrefix;
   Name m_ckName;