build: require gcc >= 4.8.2 and boost >= 1.54.0

Change-Id: I075413f6dfa1183682c4432cf96a47323cc6c43a
Refs: #3599
diff --git a/tests/test-case.t.cpp.sample b/tests/test-case.t.cpp.sample
index 27c6d8a..7aa05f9 100644
--- a/tests/test-case.t.cpp.sample
+++ b/tests/test-case.t.cpp.sample
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2014-2015,  Arizona Board of Regents.
+ * Copyright (c) 2014-2016,  Arizona Board of Regents.
  *
  * This file is part of ndn-tools (Named Data Networking Essential Tools).
  * See AUTHORS.md for complete list of ndn-tools authors and contributors.
@@ -40,7 +40,7 @@
   int i = 0;
 
   // For reference of available Boost.Test macros, see
-  // http://www.boost.org/doc/libs/1_48_0/libs/test/doc/html/utf/testing-tools/reference.html
+  // http://www.boost.org/doc/libs/1_54_0/libs/test/doc/html/utf/testing-tools/reference.html
 
   BOOST_REQUIRE_NO_THROW(i = 1);
   BOOST_REQUIRE_EQUAL(i, 1);