Cookies won't get deleted after update to 1.X

Requests ignores `Set-Cookie: cookie_user=deleted; expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/; domain=.netload.in`

full log

```
HTTP/1.1 302 Found
Set-Cookie: PHPSESSID=2a4eed6c32fdf347d77dd3aa07596766; path=/
Set-Cookie: cookie_user=182018%3A75e5d076a5077cc37cf0822c7e49dbb5; expires=Wed, 10-Apr-2013 13:26:08 GMT; path=/; domain=.netload.in
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Location: /index.php
Content-type: text/html
Content-Length: 0
Date: Wed, 03 Apr 2013 13:26:08 GMT
Server: nginx/1.2.4


GET /index.php?id=15 HTTP/1.1
Host: netload.in
Accept-Language: en;q=0.8
Accept-Encoding: deflate, gzip, x-gzip, identity, *;q=0
Keep-Alive: 300
Accept: text/html, application/xml;q=0.9, application/xhtml+xml, image/png, image/jpeg, image/gif, image/x-xbitmap, */*;q=0.1
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.43 Safari/537.31
Accept-Charset: utf-8, iso-8859-1, utf-16, *;q=0.1
Connection: Keep-Alive, TE
Cookie: cookie_user=182018%3A75e5d076a5077cc37cf0822c7e49dbb5; PHPSESSID=2a4eed6c32fdf347d77dd3aa07596766
TE: deflate, gzip, chunked, identity, trailers


HTTP/1.1 302 Found
Set-Cookie: cookie_user=deleted; expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/; domain=.netload.in
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Location: index.php
Content-type: text/html
Content-Length: 0
Date: Wed, 03 Apr 2013 13:26:08 GMT
Server: nginx/1.2.4


GET /index.php HTTP/1.1
Host: netload.in
Accept-Language: en;q=0.8
Accept-Encoding: deflate, gzip, x-gzip, identity, *;q=0
Keep-Alive: 300
Accept: text/html, application/xml;q=0.9, application/xhtml+xml, image/png, image/jpeg, image/gif, image/x-xbitmap, */*;q=0.1
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.43 Safari/537.31
Accept-Charset: utf-8, iso-8859-1, utf-16, *;q=0.1
Connection: Keep-Alive, TE
Cookie: cookie_user=182018%3A75e5d076a5077cc37cf0822c7e49dbb5; PHPSESSID=2a4eed6c32fdf347d77dd3aa07596766
TE: deflate, gzip, chunked, identity, trailers
```


Could you provide the output from the following? `python -c 'import requests; print(requests.__version__)'`


It's latest development version (pulled from git few hours ago).

``` python
# python -c 'import requests; print(requests.__version__)'
1.2.0
```

Steps to reproduce error (requests is sending GETs with undeleted cookie and server is bouncing it so we get TooManyRedirects error).

``` python
import requests

data = {'txtuser': '182018', 'txtpass': 'hl16AH', 'txtcheck': 'login', 'txtlogin': ''}
requests.post('http://netload.in/index.php', data)
```


@gazpachoking any insight? I'm going to take a look at this now


Also, for the record, the following reproduces this well:

``` python
import requests

s = requests.Session()
s.get('https://httpbin.org/cookies/set', params={'cookiename': 'value'})
print(s.cookies['cookiename'])
# => value
s.get('https://httpbin.org/response-headers', params={'Set-Cookie': 'cookiename=deletes; expires=Thu, 01-Jan-1970 00:00:01 GMT; domain=httpbin.org'})
print(s.cookies['cookiename'])
# => value
```


So as I mentioned to @gazpachoking on IRC, using pdb, I seem to have traced this to an issue in cookielib which makes absolutely no sense. If this was working prior to 1.x there should be no reason for it to have stopped working.

For future adventurers though here are some relevant snips:

```
(Pdb) p ns_hdrs
['httpbin=cookie; expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/; domain=httpbin.org']
(Pdb) p parse_ns_headers(ns_hdrs)
[[('httpbin', 'cookie'), ('expires', 1), ('path', '/'), ('domain', 'httpbin.org'), ('version', '0')]]
(Pdb) p self._cookies_from_attrs_set(parse_ns_headers(ns_hdrs), request)
[]
(Pdb) where
  /usr/lib64/python2.6/bdb.py(368)run()
-> exec cmd in globals, locals
  <string>(1)<module>()
  /home/icordasc/sandbox/requests/requests/sessions.py(365)get()
-> return self.request('GET', url, **kwargs)
  /home/icordasc/sandbox/requests/requests/sessions.py(350)request()
-> resp = self.send(prep, **send_kwargs)
  /home/icordasc/sandbox/requests/requests/sessions.py(456)send()
-> r = adapter.send(request, **kwargs)
  /home/icordasc/sandbox/requests/requests/adapters.py(256)send()
-> r = self.build_response(request, resp)
  /home/icordasc/sandbox/requests/requests/adapters.py(125)build_response()
-> extract_cookies_to_jar(response.cookies, req, resp)
  /home/icordasc/sandbox/requests/requests/cookies.py(105)extract_cookies_to_jar()
-> jar.extract_cookies(res, req)
  /usr/lib64/python2.6/cookielib.py(1637)extract_cookies()
-> for cookie in self.make_cookies(response, request):
> /usr/lib64/python2.6/cookielib.py(1581)make_cookies()
-> self._process_rfc2109_cookies(ns_cookies)
```