[google] handle errors gracefully

[Stefano Rivera]

2009-05-25 01:23:04,251 ERROR core.dispatcher: Exception occured in GoogleAPISearch processor of google plugin
Traceback (most recent call last):
  File "/home/dazzle/ibid/dazzle/ibid/core.py", line 23, in _process
    processor.process(event)
  File "/home/dazzle/ibid/dazzle/ibid/plugins/__init__.py", line 55, in process
    method(event, *match.groups())
  File "/home/dazzle/ibid/dazzle/ibid/plugins/google.py", line 48, in search
    items = self._google_api_search(query)
  File "/home/dazzle/ibid/dazzle/ibid/plugins/google.py", line 40, in _google_api_search
    f = urlopen(req)
  File "/usr/lib/python2.5/urllib2.py", line 124, in urlopen
    return _opener.open(url, data)
  File "/usr/lib/python2.5/urllib2.py", line 381, in open
    response = self._open(req, data)
  File "/usr/lib/python2.5/urllib2.py", line 399, in _open
    '_open', req)
  File "/usr/lib/python2.5/urllib2.py", line 360, in _call_chain
    result = func(*args)
  File "/usr/lib/python2.5/urllib2.py", line 1107, in http_open
    return self.do_open(httplib.HTTPConnection, req)
  File "/usr/lib/python2.5/urllib2.py", line 1080, in do_open
    r = h.getresponse()
  File "/usr/lib/python2.5/httplib.py", line 928, in getresponse
    response.begin()
  File "/usr/lib/python2.5/httplib.py", line 385, in begin
    version, status, reason = self._read_status()
  File "/usr/lib/python2.5/httplib.py", line 349, in _read_status
    raise BadStatusLine(line)
BadStatusLine

Google API search looks pretty restful, we need to handle this