Close the connection after sending the response when a client is HTTP/1.0.

We consider the request stream to be "early_close"d as soon as an HTTP/1.0
request is received. This causes us to close the connection.

This allows old python xmlrpclib clients (for example) to work against
Cohttp servers.
Rename Cstruct.copy_buffers to Cstruct.copyv
update CHANGES format
add enough basic auth functions to serve a passworded up website
Lwt: fix ISDIR errors when trying to serve up a directory
release 0.9.4
Add `respond_redirect` and `respond_need_auth` helpers for Lwt

closes #14
bump trunk to 0.9.5
Merge pull request #12 from djs55/cstruct

Cstruct.copy_buffers -> Cstruct.copyv
Add CHANGES for 0.9.5
Merge pull request #16 from djs55/merge-0.9.5

Add CHANGES for 0.9.5
Merge pull request #10 from djs55/http-1.0

Close the connection after sending the response when a client is HTTP/1....
fix the Cookie header retrieval (it must use lower case, not upper case for the header key)
release 0.9.5
bump trunk to 0.9.6