geocode function: incorrect URL generation when the address contains non ASCII characters

[mgacc0]

If you try to geocode an address with non-ascii characters, the generated URL is not correct.

geocode("Rúa Pedra Seixa, 33, Pontevedra, Spain")
# Information from URL : http://maps.googleapis.com/maps/api/geocode/json?address=r%FAa%20pedra%20seixa,%2033,%20Pontevedra&sensor=false
# Warning message:
# geocode failed with status INVALID_REQUEST

The conversion of non-ASCII characters to percent encoded characters is not correct.

For this particular case, the correct URL should be:
http://maps.googleapis.com/maps/api/geocode/json?address=r%C3%BAa%20pedra%20seixa,%2033,%20Pontevedra&sensor=false