#4393 plugging data source.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35548 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Fix for Derivative[g(g(x))]

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35549 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Avoid creating new array in intersect line x conic

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35550 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e