Issue 981299: Rsync protocol missing from urlparse

The rsync protocol is missing from urlparse.py. 

>>> import urlparse
>>> urlparse.urlparse("rsync://a.b.c/d/e")
('rsync', '', '//a.b.c/d/e', '', '', '')

The machine name a.b.c should be in field 1 of the
result, and the directory part /e/f in field 2.