[giac] Fix an issue with abs() on systems that do not have std exceptions. Other fixes that should not affect ggb.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26327 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Allow dragging for delete tool in Touch

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26328 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Removed debug

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26329 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@26330 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e