diydrones/ardupilot — pull request #466 by geeksville (2013-07-29 06:17:49+00:00)
Title: PX4: Update to latest PX4/Firmware tree (fixes build - not yet tested on hardware)

I'll test on hardware soonish, but I think most (all?) of these changes will be desirable once the diydrones/Firmware fork is updated to the revisions specified: