Fix compilation of 'error'.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1741 b0c55286-4f34-0410-a049-a1e7e93b0762
More general array indexing.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1742 b0c55286-4f34-0410-a049-a1e7e93b0762
Silence some warnings.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1743 b0c55286-4f34-0410-a049-a1e7e93b0762
Fix build with ecl and gcl.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1744 b0c55286-4f34-0410-a049-a1e7e93b0762
Documentation update.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1745 b0c55286-4f34-0410-a049-a1e7e93b0762