Merged master into mixer unit tests branch

ROMFS/px4fmu_common/init.d/rcS

ROMFS/px4fmu_test/init.d/rcS

Tools/px4params/dokuwikiout.py

Tools/px4params/dokuwikiout_listings.py

makefiles/config_px4fmu-v1_backside.mk

makefiles/config_px4fmu-v1_default.mk

makefiles/config_px4fmu-v1_test.mk

makefiles/config_px4fmu-v2_default.mk

makefiles/config_px4fmu-v2_test.mk

makefiles/toolchain_gnu-arm-eabi.mk

nuttx-configs/px4fmu-v1/nsh/defconfig

nuttx-configs/px4fmu-v2/nsh/defconfig

src/drivers/boards/px4fmu-v1/board_config.h

src/drivers/boards/px4fmu-v2/board_config.h

src/drivers/boards/px4fmu-v2/px4fmu2_init.c

src/drivers/boards/px4io-v1/board_config.h

src/drivers/boards/px4io-v2/board_config.h

src/drivers/drv_rc_input.h

src/drivers/frsky_telemetry/frsky_data.c

src/drivers/frsky_telemetry/frsky_data.h