Update to r42318:

Announce svn0.eu.FreeBSD.org, a new official Subversion mirror for Europe.
This mirror is based in the UK, and is well connected to the rest of
Europe. It hosts read-only copies of the src, ports, doc and socsvn
repositories, all available over https (recommended), http, svn and rsync.

This mirror is generously hosted by Bytemark, http://www.bytemark.co.uk/

While here, add a note that svn0.us-east is available over rsync.