Added ability to insert cookies into cookie jar.

Fixed problem where some domain names are prepended with '.' and others 
were not.

Fixed problem with _LWPCookieJar.py to handle case where version = None

----
import urllib2, urllib, time
import cookielib
            
req_url = 'http://google.com'

## OPEN COOKIE JAR - Optional
cj = cookielib.CookieJar()

cookie_handler = urllib2.HTTPCookieProcessor(cj)
opener = urllib2.build_opener(cookie_handler)
urllib2.install_opener(opener)

req = urllib2.Request(url=req_url)
    
cj.add_cookie(req, 'cname2', 'cval2',
                {'expires':  int(time.time()) + 3600,})

cj.add_cookie(req, 'cname3', 'cval3') 

print "-" * 45
print "Cookies before first request is sent:"
for index, cookie in enumerate(cj):
    print index, '  :  ', cookie

res = urllib2.urlopen(req)
# Google will redirect, and clear the additional cookies
print "-" * 45
print "Cookies after first request is sent:"
print "(google cleared extra cookies)"
for index, cookie in enumerate(cj):
    print index, '  :  ', cookie
---

Jon,

If you want to get these changes applied you need to:

 1. Split up these three separate issues
 2. Most important: explain in full detail exactly how you used cookielib, what you expected it to do, and what it actually did, and then justify why your expectation is correct.
 3. Ensure that automated tests cover each change
 4. Respond to the review comments that are likely to follow

Minor remarks:
- generate your patch from the top-level directory, so that people can just apply the patch from there (see http://www.python.org/dev/patches/);
- don’t put two statements on one line (“if thing: dostuff()”), as per PEP 8.