HTTP status code texts

Hello,
Due to HTTP RFC — http://www.w3.org/Protocols/rfc2616/rfc2616-sec6.html#sec6.1 — status text phrases are required in HTTP headers. Most of parsers allows to omit them, but some ones (e.g. Erlang's httpc module) fail. Here I've wrote a small patch to fix this problem. Could you please merge it to upstream?

Regards.