Feature added. GoogleMapsLinkFactor create valid Googlemaps routelink.

e.g.
https://maps.google.fi/maps?saddr=Lotissement+California+,+Lucciana&daddr=Lotissement+California+,+Lucciana+to:N193+,+Lucciana+to:Lotissement+California+,+Lucciana&output=classic&hl=fi&ie=UTF8