[Rd] svn.r-project.org with new trusted certificate

[Martin Maechler]

The SVN (Subversion) Server of the R-project, svn.r-project.org,
financed and run by the Math Department of ETH Zurich,
now has got it's own "validated" aka "trusted" SSL certificate,
mostly thanks to Simon Urbanek (R-core) and his employer, AT&T Labs.

This may mean that those of you who have been using the R
development sources, (or had scripts that read the logs, or ...)
may need to cache the new certificate by some one-time manual
interaction.

Martin Maechler, ETH Zurich