Smaller hotfixes for att pos estimator
Hotfix: forbid integrator to accumulate NaN values if they ever would occur
Hotfix: Fix integrator parameters
Integral fixes, last parts
Startup scripts: Corrected cases where commander was not started, updated several outdated scripts
Startup scripts: Start the commander early and let it try to open the mavlink_fd with 20Hz
New Roboclaw driver.
Merge pull request #515 from julianoes/startup_fixes

Startup script update
remove commander from hil startup scripts
Merge pull request #517 from thomasgubler/hil_startupscripts

remove commander from hil startup scripts
Startup scripts: fixed stupid typo
Merge pull request #518 from PX4/hotfix_fixedwing_startup

Startup scripts: fixed stupid typo
Merge branch 'master' of git://github.com/PX4/Firmware into roboclaw
Working on driver.