Hotfix for mavlink logbuffer, needs another round of validation.
Added logbuffer free function
Hotfix: Better PX4IO detection feedbak
Hotfixed position control param update
Hotfix: Correct frame print string
Hotfix: Cleanup on startup scripts
Hotfix: Rely on gyro calibration
Hotfix: Increase stack size for low prio commander task
Hotfix for IO-less systems
Let tone_alarm cmd take file name as tune parameter

- Restore ability to play beloved William Tell Overture, from file