make setRepositories consistent with contrib.url

git-svn-id: https://svn.r-project.org/R/trunk@67266 00db46b3-68df-0310-9c12-caf00c1e9a41
Omegahat no longer provides any binary packages.
Tweaks to NEWS for consistency.


git-svn-id: https://svn.r-project.org/R/trunk@67268 00db46b3-68df-0310-9c12-caf00c1e9a41
updates

git-svn-id: https://svn.r-project.org/R/trunk@67270 00db46b3-68df-0310-9c12-caf00c1e9a41