Lighttpd

According to CGI 1.1 spec, when http://example.com/foo.cgi is valid,
http://example.com/foo.cgi/bar is also valid,
with environment variable PATH_INFO set to "/bar".
Lighttpd is OK with these URIs.

However, with userdir, the extra path causes "404 - Not Found".
That is, when http://example.com/~username/foo.cgi is OK,
http://example.com/~username/foo.cgi/bar should be also OK,
but lighttpd produces 404.

-- echochamber at gmail