Vignette: no url package, no \R command, sort LaTeX pkgs, repaginate

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/xtable@65 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Proposal: new function autoformat() and xtable argument auto=TRUE/FALSE

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/xtable@66 edb9625f-4e0d-4859-8d74-9fd3b1da38cb