[giac] correct output for (1;1)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@25488 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Pulled up openFileAsGGB

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@25489 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[giac] fix for x(x+1) and x({33,44)}

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@25490 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e