[giac] changes for area, perimeter, radius, should fix tickets 3434 (assuming caseval is called) and 3435.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26416 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Allow assigning numerics to complex points (needed for Giac)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26417 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@26418 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Debug string for commands

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26419 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e