account for br.submit urls that are relative

[hadojae]

Traceback (most recent call last):
File "bullyblinder.py", line 1224, in
response = br.submit()
File "/usr/local/lib/python2.7/dist-packages/mechanize/_mechanize.py", line 683, in submit
return self.open(self.click(*args, **kwds))
File "/usr/local/lib/python2.7/dist-packages/mechanize/_mechanize.py", line 674, in click
return self._add_referer_header(request)
File "/usr/local/lib/python2.7/dist-packages/mechanize/_mechanize.py", line 206, in _add_referer_header
scheme = request.get_type()
File "/usr/local/lib/python2.7/dist-packages/mechanize/_urllib2_fork.py", line 187, in get_type
raise ValueError("unknown url type: %s" % self.__original)
ValueError: unknown url type: ../loginsetup.php