reduced argument "digits" of round() commands from 6 to 3 and removed argument "digits = 5" of print() commands so that the general setting "option( digits = 3 )" applies; both changes should reduce the probability to get different results on different systems due to different rounding

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/sampleselection@1507 d36ae590-6c38-44c5-9ba5-7217e93607d8
replaced mvrnorm() of package "MASS" by rmvnorm() of package "mvtnorm" so that in all examples and test scripts all multivariate normal random numbers are consistently generated by rmvnorm() of package "mvtnorm"; thus, package "MASS" no longer needs to be "suggested"

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/sampleselection@1508 d36ae590-6c38-44c5-9ba5-7217e93607d8
NEWS: added changes that have already been implemented and that will be in the next version

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/sampleselection@1509 d36ae590-6c38-44c5-9ba5-7217e93607d8