LAYER: corrections in messages.

Signed-off-by: bert <bert.timmerman@xs4all.nl>
LINE: corrections in messages.

Signed-off-by: bert <bert.timmerman@xs4all.nl>
LTYPE: corrections in messages.

Signed-off-by: bert <bert.timmerman@xs4all.nl>
LWPOLYLINE: corrections in messages.

Signed-off-by: bert <bert.timmerman@xs4all.nl>