Configure: fixed build with --with-stream. Some combinations of options might cause the builds with the --with-stream option to break due to invalid value of the STREAM_INCS make variable, e.g. auto/configure \ --with-stream \ --with-http_perl_module=dynamic \ --without-http_memcached_module \ --without-http_empty_gif_module \ --without-http_browser_module \ --without-http_upstream_hash_module \ --without-http_upstream_ip_hash_module \ --without-http_upstream_least_conn_module \ --without-http_upstream_keepalive_module \ --without-http_upstream_zone_module \ Explicit initialization of ngx_module_libs and ngx_module_link matches what we already do when processing mail modules, and is also required after the next change.