#26 headers order with client code

[Anonymous]

Currently do-http-request in client.cl uses
parse-and-listify-header-block of headers.cl.

Roughly speaking, the final headers is reverse order.
(if server sends several set-cookie with same name but
different value, the order is important)

Currently, I just do nreverse at the end of
parse-and-listify-header-block to correct the behaviour