Correct config for nginx

Tested and running after rewrite default config on:
OS: Linux calculate 3.9.7-calculate x86_64 Intel(R) Xeon(R) CPU E5-2650 0 @ 2.00GHz GenuineIntel
nginx:
www-servers/nginx-1.4.7
USE="http http-cache ipv6 pcre ssl"
NGINX_MODULES_HTTP="access auth_basic autoindex browser charset empty_gif fastcgi geo gzip limit_conn limit_req map memcached proxy referer rewrite scgi split_clients ssi stub_status upstream_ip_hash userid uwsgi"