In all examples that create files (even if in \dontrun):
* Use a tempfile()
* Print the filename
* Finally remove the file (command separated by an empty line)


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/dplr@835 edb9625f-4e0d-4859-8d74-9fd3b1da38cb