belated add of plot method for ordipointlabel

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2541 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
fix typo

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2542 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
adds a permutations argument

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/vegan/pkg/vegan@2543 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Merge branch 'r-forge-svn-local'