Make a new urllib package .

It consists of code from urllib, urllib2, urlparse, and robotparser.
The old modules have all been removed.  The new package has five
submodules: urllib.parse, urllib.request, urllib.response,
urllib.error, and urllib.robotparser.  The urllib.request.urlopen()
function uses the url opener from urllib2.

Note that the unittests have not been renamed for the
beta, but they will be renamed in the future.

Joint work with Senthil Kumaran.

Lib/test/test_httpservers.py

@@ -11,7 +11,7 @@ import os
 import sys
 import base64
 import shutil
-import urllib
+import urllib.parse
 import http.client
 import tempfile
 import threading
@@ -322,7 +322,8 @@ class CGIHTTPServerTestCase(BaseTestCase):
              (res.read(), res.getheader('Content-type'), res.status))
 
     def test_post(self):
-        params = urllib.urlencode({'spam' : 1, 'eggs' : 'python', 'bacon' : 123456})
+        params = urllib.parse.urlencode(
+            {'spam' : 1, 'eggs' : 'python', 'bacon' : 123456})
         headers = {'Content-type' : 'application/x-www-form-urlencoded'}
         res = self.request('/cgi-bin/file2.py', 'POST', params, headers)