Report MLwiN version information in the model output.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/r2mlwin@271 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
fixed "R CMD check"

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/r2mlwin@272 edb9625f-4e0d-4859-8d74-9fd3b1da38cb