DXF and SVG profile exporter blender script

DXF & SVG Profile exporter

Thisscript exports selected wire contours (such as the cross sectionsgenerated by the CrossSection script) to dxf polylines or svg paths. Inthis last version I removed sdxf dependency. Migius did a big job at simplifying DXF outut too. He has also made a new versionof a dxf export script so this one is a bit obsolete now.