news updated, dllfunc in func list

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/desolve@635 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
new version of this vignette

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/desolve@636 edb9625f-4e0d-4859-8d74-9fd3b1da38cb