Documentation fixes.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1736 b0c55286-4f34-0410-a049-a1e7e93b0762
Do not crash printing '%'.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1737 b0c55286-4f34-0410-a049-a1e7e93b0762
Fix ComplexPatternMatch.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1738 b0c55286-4f34-0410-a049-a1e7e93b0762
fix double !! via \spadfunFromX

git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1739 b0c55286-4f34-0410-a049-a1e7e93b0762
Improve integration in terms of 'Ei' and 'erf'.


git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1740 b0c55286-4f34-0410-a049-a1e7e93b0762