A couple of robots changes.
* Change Home page title to: Emulab - Network Emulation Testbed Home * Change mainsite robot meta tags to include a description, set to the same as the new home page title above. * Remote now sites get standard "noindex" robot directive; crawlers will follow links on remote sites but not index them in their search engines. * Add a fixed link to www.emulab.net/netemu.php3 on all sites; used to be on mainsite only; that was dumb! * Minor cosmetic changes to netemu.php3.