* fix for #4582
* optimize Coords operations

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37239 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Optimize draw parallelogram

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37240 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Curvature[u, v, surface]

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37241 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
5.0.22.0

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37242 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e