Clean up guessing package.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1631 b0c55286-4f34-0410-a049-a1e7e93b0762
More efficient norm of fractional ideals.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1632 b0c55286-4f34-0410-a049-a1e7e93b0762