Intersect plane/limited quadric (part 1) : surface drawing (ellipse part)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24156 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
test..

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24157 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e