Solving r-forge problems with vignettes:
 * Adding tex-concordance to the vignettes/figures folder to avoid latex compilation errors.
 * Adding inst/doc/rhrv.index.html to enable vignette search.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/rhrv@142 edb9625f-4e0d-4859-8d74-9fd3b1da38cb