Closing i41: Security Considerations

<http://www3.tools.ietf.org/wg/httpbis/trac/ticket/41>

Now that the security properties document is chartered and underway, I  
think we can close i41, as it was fairly specific to the MTI  
discussions. We still have several other security-considerations bugs  
open, and other aspects should be raised separately.

Cheers,

--
Mark Nottingham     http://www.mnot.net/