minor changes 

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/openair@902 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
more updates to NAMESPACE

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/openair@903 edb9625f-4e0d-4859-8d74-9fd3b1da38cb