bugfix: reserved ports for stream_server_config. feature: expanded environment values in --- tcp_listen section. bugfix: user name with dash was not allowed, eg like 'www-data'. thanks lijunlong for the patch. bugfix: there can be trailing spaces in HTTP 0.9. feature: add TEST_NGINX_FAST_SHUTDOWN to stop Nginx without graceful. thanks spacewander for the patch. bugfix: supported to parse http trai