[giac] put back correct version of solve.cc

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34820 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@34821 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Back to 3d

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34822 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e