addr-osmify: improve nominatim query
addr-osmify: improve nominatim query

By using the format suggested at
<http://wiki.openstreetmap.org/wiki/Nominatim#Search>.

vmiklos/vmexam,vmiklos/vmexam,vmiklos/vmexam,vmiklos/vmexam,vmiklos/vmexam,vmiklos/vmexam,vmiklos/vmexam,vmiklos/vmexam,vmiklos/vmexam,vmiklos/vmexam,vmiklos/vmexam,vmiklos/vmexam,vmiklos/vmexam,vmiklos/vmexam