Replay: prevent float exception in log writing
HAL_PX4: FRAM does not support fsync

the fsync just wastes time reopening /fs/mtd
AP_OpticalFlow: NOT FOR MASTER

test use of PX4Flow Sonar
AP_NavEKF: NOT FOR MASTER

test use of PX4Flow sonar
Copter: NOT FOR MASTER

test use of PX4Flow sonar