phangorn dependency fix

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/ouwie@148 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
phangorn dependency fix

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/ouwie@149 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
phangorn dependency fix

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/ouwie@150 edb9625f-4e0d-4859-8d74-9fd3b1da38cb