[giac] Improves cross for mixed 2-d/3-d inputs
Changes for clang and other small CAS improvements.
Adds diff geometry functions: curvature, osculating_circle and evolute.


git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35064 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Changing giac.js to the latest version in web/kickstart.xml

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35065 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
first version for new behavior for attach/detach (web and touch)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35066 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
More than 2 EVs #4406

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35067 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e