Merge branch 'master' into rforge-local: Version 0.20.3

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nmf@190 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Merge branch 'master' into rforge-local: fixes for 0.20.3

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/nmf@191 edb9625f-4e0d-4859-8d74-9fd3b1da38cb