saga_api: fix color ramp preset RED_BLUE_GREEN (copy/paste error introduced in rev1523)
io_gdal, ogr_driver: fix _Write_Line(), handling of 2D and 3D case was inverted
io_gdal, OGR Import/Export: fix DXF export (the driver does not allow arbitrary field creation), elevation is written out for 3D points and 3D lines (3D polygons must be converted to 3D (poly) lines beforehand); fix import for OGR drivers which can not determine the geometry type automatically (e.g. DXF driver) by introducing the possibility to optionally set the geometry type by parameter
3D Shapes Viewer: fix drawing of multi-point and multi-line shapes
Convert Polygons to Lines: add support of vertex type Z/M
Add Coordinates to Points: add support of vertex type Z/M
Convert Lines to Points, Convert Multipoints to Points: add support of vertex type Z/M
shapes_tools: new module Convert Vertex Type (2D/3D) added; allows to convert from vertex type XY to XYZ/M and vice versa