Here's a big pile of changes for this round. We have * a lot of regulatory code changes to deal with the way newer Intel devices handle this * a change to drop packets while disconnecting from an AP instead of trying to wait for them * a new attempt at improving the tailroom accounting to not kick in too much for performance reasons * improvements in wireless link statistics * many other small improvements and small fixes that didn't seem necessary for 3.19 (e.g. in hwsim which is testing only code)