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.
diff --git a/Lib/http/server.py b/Lib/http/server.py
index 35ade6c..6259a4d 100644
--- a/Lib/http/server.py
+++ b/Lib/http/server.py
@@ -93,7 +93,7 @@
 import time
 import socket # For gethostbyaddr()
 import shutil
-import urllib
+import urllib.parse
 import select
 import mimetypes
 import posixpath
@@ -683,7 +683,7 @@
             return None
         list.sort(key=lambda a: a.lower())
         r = []
-        displaypath = cgi.escape(urllib.unquote(self.path))
+        displaypath = cgi.escape(urllib.parse.unquote(self.path))
         r.append('<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">')
         r.append("<html>\n<title>Directory listing for %s</title>\n" % displaypath)
         r.append("<body>\n<h2>Directory listing for %s</h2>\n" % displaypath)
@@ -699,7 +699,7 @@
                 displayname = name + "@"
                 # Note: a link to a directory displays with @ and links with /
             r.append('<li><a href="%s">%s</a>\n'
-                    % (urllib.quote(linkname), cgi.escape(displayname)))
+                    % (urllib.parse.quote(linkname), cgi.escape(displayname)))
         r.append("</ul>\n<hr>\n</body>\n</html>\n")
         enc = sys.getfilesystemencoding()
         encoded = ''.join(r).encode(enc)
@@ -723,7 +723,7 @@
         # abandon query parameters
         path = path.split('?',1)[0]
         path = path.split('#',1)[0]
-        path = posixpath.normpath(urllib.unquote(path))
+        path = posixpath.normpath(urllib.parse.unquote(path))
         words = path.split('/')
         words = filter(None, words)
         path = os.getcwd()
@@ -947,7 +947,7 @@
         env['SERVER_PROTOCOL'] = self.protocol_version
         env['SERVER_PORT'] = str(self.server.server_port)
         env['REQUEST_METHOD'] = self.command
-        uqrest = urllib.unquote(rest)
+        uqrest = urllib.parse.unquote(rest)
         env['PATH_INFO'] = uqrest
         env['PATH_TRANSLATED'] = self.translate_path(uqrest)
         env['SCRIPT_NAME'] = scriptname