Merge working changes into export-build branch.

.gitignore

Makefile

ROMFS/px4fmu_common/init.d/rc.FMU_quad_x

ROMFS/px4fmu_common/init.d/rc.PX4IO

ROMFS/px4fmu_common/init.d/rc.PX4IOAR

ROMFS/px4fmu_common/init.d/rc.boarddetect

ROMFS/px4fmu_common/init.d/rc.jig

ROMFS/px4fmu_common/init.d/rc.logging

ROMFS/px4fmu_common/init.d/rc.sensors

ROMFS/px4fmu_common/init.d/rc.standalone

ROMFS/px4fmu_common/init.d/rcS

ROMFS/px4fmu_common/logging/logconv.m

ROMFS/px4fmu_common/mixers/FMU_AERT.mix

ROMFS/px4fmu_common/mixers/FMU_AET.mix

ROMFS/px4fmu_common/mixers/FMU_Q.mix

ROMFS/px4fmu_common/mixers/FMU_RET.mix

ROMFS/px4fmu_common/mixers/FMU_X5.mix

ROMFS/px4fmu_common/mixers/FMU_delta.mix

ROMFS/px4fmu_common/mixers/FMU_hex_+.mix

ROMFS/px4fmu_common/mixers/FMU_hex_x.mix