Problem: test_stream not yet using unity

Solution: migrate to unity

Makefile.am

@@ -544,7 +544,8 @@ tests_test_probe_router_LDADD = src/libzmq.la ${UNITY_LIBS}
 tests_test_probe_router_CPPFLAGS = ${UNITY_CPPFLAGS}
 
 tests_test_stream_SOURCES = tests/test_stream.cpp
-tests_test_stream_LDADD = src/libzmq.la
+tests_test_stream_LDADD = src/libzmq.la ${UNITY_LIBS}
+tests_test_stream_CPPFLAGS = ${UNITY_CPPFLAGS}
 
 tests_test_stream_empty_SOURCES = tests/test_stream_empty.cpp
 tests_test_stream_empty_LDADD = src/libzmq.la ${UNITY_LIBS}