feature: added utility Perl function server_port_for_client. thanks doujiang for the patch in #7.
feature: added configuration Perl function server_name(). thanks doujiang for the original patch in #7.
bugfix: server address should default to 127.0.0.1 instead of "localhost".
removed "env LUA_PATH" and "env LUA_CPATH" from the default nginx configuration generated.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	lib/Test/Nginx/Socket.pm
	lib/Test/Nginx/Util.pm