For OGR DGN added polygon inner ring (holes) writing and MSLink writing.
|Reported by:||martinslinde||Owned by:||warmerdam|
|Severity:||normal||Keywords:||dgn mslink inner-rings|
For OGR DGN driver added write support for polygon inner rings. If a polygon has inner rings, then Cell is created containing multiple Shapes, all inner ring Shapes are marked with Hole property.
Added missing MSLink write support.
(I have not done any C++ programming for a while, so it would be good if someone can go through the patch).