mono 1.2 beta series is in testing

Actually this should go to unstable. But as written on a couple of websites, announcments and the chief developers weblog: users are recommended to switch to the 1.1.x tree, since the testing of it is way more sophisticated. As a bonus and because it doesn't effect the oridinary things, the 2.0 alpha parts have been enabled. Additionally, the new xsp went to testing, since it works nicely together with the 1.1.x series and even doesn't build (without hacks) on mono-1.0.6 State of things: mono-1.0.6 in extra, xsp-1.0.6 and mono-1.1.4 in testing and be prepared, our general switch to the 1.1.x series might come soon.