Speed controls, bridges, and new processors

The last 24 hours have brought some interesting improvements: Scott Ullrich committed new code for bridging, YONETANI Tomokazu committed his est (Enhanced Speedstep) support, which was converted from NetBSD, and Simon ‘corecode’ Schubert has
success building world for the AMD64 architecture. (Kernel is not supported, so fully native AMD64 DragonFly isn’t possible – yet.) Unlike the other two items, Simon’s code has not yet been committed, as it’s the newest of these three items.