THRIFT-3329: fix C++ tests incompatibility with boost-1.59

Client: C++
Patch: James E. King, III <jim.king@simplivity.com>

This closes #620
diff --git a/lib/cpp/test/TServerIntegrationTest.cpp b/lib/cpp/test/TServerIntegrationTest.cpp
index 38cbc21..f530771 100644
--- a/lib/cpp/test/TServerIntegrationTest.cpp
+++ b/lib/cpp/test/TServerIntegrationTest.cpp
@@ -176,7 +176,7 @@
       pEventHandler->wait();
     }
 
-    BOOST_MESSAGE("server is listening");
+    BOOST_TEST_MESSAGE("server is listening");
   }
 
   void blockUntilAccepted(uint64_t numAccepted) {
@@ -185,16 +185,16 @@
       pEventHandler->wait();
     }
 
-    BOOST_MESSAGE(boost::format("server has accepted %1%") % numAccepted);
+    BOOST_TEST_MESSAGE(boost::format("server has accepted %1%") % numAccepted);
   }
 
   void stopServer() {
     if (pServerThread) {
       pServer->stop();
-      BOOST_MESSAGE("server stop completed");
+      BOOST_TEST_MESSAGE("server stop completed");
 
       pServerThread->join();
-      BOOST_MESSAGE("server thread joined");
+      BOOST_TEST_MESSAGE("server thread joined");
       pServerThread.reset();
     }
   }