aov.car.R(..., return = "aov") documented and corrected

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/afe@127 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
corrected aov.car tests for return = "aov".

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/afe@128 edb9625f-4e0d-4859-8d74-9fd3b1da38cb