#4718 fix missings

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37879 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Export(pstricks,pgf,asy):spline (no fill) +fix in curvecartesian

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37880 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e