added command "options( digits = 3 ) to all test scripts (except for the parts that should show smoothness around rho=0) in order to reduce the chance of becoming different results due to different roundings on other computers

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/micecon@1962 95fa4d17-b1e8-0310-9d42-a43d67248e42
.Rbuildignore: excluded 4 further test scripts and the corresponding output files, because they easily give many slightly different results on other computers and hence show many differences in the check results on CRAN

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/micecon@1963 95fa4d17-b1e8-0310-9d42-a43d67248e42