Updates to allow a submission to CRAN.  CRAN still objects to call to x11().  A call to x11() is necessary to allow interactive graphics on OSX.  I realise that x11 no longer ships with OSX, but the free (open-source?) install is trivial.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/qfa@608 edb9625f-4e0d-4859-8d74-9fd3b1da38cb