[mkgmap-dev] [mp: PATCH] Multipolygon handling - decomposed polygons

I have made some improvements to the multipolygon branch. Changes: * Polygons with inner polygons are now divided into several polygons. It's much faster and the PolygonSplitter cannot destroy them any more. * Improved tag handling. The tags from original ways are removed. This has the disadvantage that non polygon tags like highway are destroyed. This must be fixed within one of the next patches. * Added a FakeIdGenerator that creates unique fake ids for elements created by mkgmap. The Osm5XmlHandler has been adapted to that. As before I am happy about any (good and bad) feedback!! WanMil Note: The code is not ready for the trunk. Some documentation and better method naming will be applied in one of the next patch.