Lwan is a toy web server. So plastic-y that it can't even serve files, only
a "Hello, world!" page.  OK, it can serve files now -- but don't count on
it, it will most probably just mess things up.

It is meant to be only an exercise in writing a server using BSD sockets and
other auxilliary APIs, like epoll. It is not meant to serve things on the
Internet, as it isn't resilient enough.

This can yield around 175000 requests/s on a dual-core Core i7 processor. 
Not too shabby for something written in about 20 days.  I'm open to
suggestions that can improve performance; better yet if you can fork it and
actually make it happen.