minor adjustment to clean up files written in testing.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/tsanalysis@176 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
minor edit.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/tsanalysis@177 edb9625f-4e0d-4859-8d74-9fd3b1da38cb