fix #9279, fix #9380, fix #9391, fix #9392 - validator/tagchecker:
 - `greek_catholic` should not trigger "unknown christian denomination"
 - detect `motor_vehicle=yes` from `highway=motorway`, `primary`, `secondary`, `tertiary` etc.
 - detect `highway=proposed` with `access=*`
 - detect `landuse` tagged `building`s

git-svn-id: http://josm.openstreetmap.de/svn/trunk@6435 0c6e7542-c601-0410-84e7-c038aed88b3b