cluster.index with 'mat' argument for stacking rows of a matrix according to cluster-variable

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/lava/pkg/mets@950 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
pbvn, pmvn updated

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/lava/pkg/mets@951 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
package message changed

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/lava/pkg/mets@952 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
pmvn cpp function. some progress...

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/lava/pkg/mets@953 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
roxygen...

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/lava/pkg/mets@954 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
normal merged

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/lava/pkg/mets@955 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
roxygen...

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/lava/pkg/mets@956 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
some progress with new pmvn function
News+description updated. preparing for 1.2.5 release
merged...