tweak


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/coin@868 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
fix exact quad-type test's dperm problem

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/coin@869 edb9625f-4e0d-4859-8d74-9fd3b1da38cb