URLs without a period stopped working as of 1.1.1

[jogo]

Pre 87792fe

>>> import urlnorm; urlnorm.norm('http://example')
u'http://example/'

on 1.1.4

>>> import urlnorm; urlnorm.norm('http://example')
Traceback (most recent call last):
  File "<input>", line 1, in <module>
    import urlnorm; urlnorm.norm('http://newcanonical')
  File "/usr/local/lib/python2.7/dist-packages/urlnorm.py", line 158, in norm
    normalized_tuple = norm_tuple(*url_tuple)
  File "/usr/local/lib/python2.7/dist-packages/urlnorm.py", line 166, in norm_tuple
    authority = norm_netloc(scheme, authority)
  File "/usr/local/lib/python2.7/dist-packages/urlnorm.py", line 239, in norm_netloc
    raise InvalidUrl('host %r is not valid' % host)
InvalidUrl: host u'example' is not valid

Inside of an intranet, these can be valid addresses.