* Added correlation methods to places that had no specification including rwi.stats.running (not legacy) and the crossdating functions.

* Started a crossdating vignette.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/dplr@814 edb9625f-4e0d-4859-8d74-9fd3b1da38cb