urllib.quote() is needed by the soc/logic/site/map.py work, so import it from
the Python 2.5.2 sources. The entire urllib.py is not supported by Google
App Engine (yet?), since it relies on 'import socket' (App Engine provides a
separate urlfetch module instead).
Patch by: Todd Larsen
Review by: to-be-reviewed
A list of bugs is available in the Google App Engine SDK project on Google Code.
Please visit http://code.google.com/p/googleappengine for more details.