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/macurl2path.py

@@ -2,7 +2,7 @@
 
 Do not import directly; use urllib instead."""
 
-import urllib
+import urllib.parse
 import os
 
 __all__ = ["url2pathname","pathname2url"]
@@ -13,7 +13,7 @@ def url2pathname(pathname):
     #
     # XXXX The .. handling should be fixed...
     #
-    tp = urllib.splittype(pathname)[0]
+    tp = urllib.parsesplittype(pathname)[0]
     if tp and tp != 'file':
         raise RuntimeError('Cannot convert non-local URL to pathname')
     # Turn starting /// into /, an empty hostname means current host
@@ -47,7 +47,7 @@ def url2pathname(pathname):
             i = i + 1
         rv = ':' + ':'.join(components)
     # and finally unquote slashes and other funny characters
-    return urllib.unquote(rv)
+    return urllib.parseunquote(rv)
 
 def pathname2url(pathname):
     """OS-specific conversion from a file system path to a relative URL
@@ -73,8 +73,8 @@ def pathname2url(pathname):
         return '/'.join(components)
 
 def _pncomp2url(component):
-    component = urllib.quote(component[:31], safe='')  # We want to quote slashes
-    return component
+    # We want to quote slashes
+    return urllib.parsequote(component[:31], safe='')
 
 def test():
     for url in ["index.html",