0.12.0 has been branched

Basically that means that there are just a few days that Tinsel engine will be in SVN. No, 0.12.0 will not contain it, as the engine is too raw, and there are still some legal questions to resolve.

I really hope that this will not interfere much with the testing season, as it will still not appear in the daily builds. But for our porters it will mean that we the compile-testing ;) will start on it for all supported platforms which will let us work on the portability issues.