Refactoring: Removed using namespace <xxx> from bench/ and test/ source files.

src/test/streams_tests.cpp

@@ -9,8 +9,7 @@
 #include <boost/assign/std/vector.hpp> // for 'operator+=()'
 #include <boost/assert.hpp>
 #include <boost/test/unit_test.hpp>
-                    
-using namespace std;
+
 using namespace boost::assign; // bring 'operator+=()' into scope
 
 BOOST_FIXTURE_TEST_SUITE(streams_tests, BasicTestingSetup)