manual control setpoint: rename variables
commander: use new manual control setpoint variable names
fw att control: use new manual control setpoint variable names
fw pos control: use new manual control setpoint variable names
mavlink receiver: use new manual control setpoint variable names
mavlink receiver: use new manual control setpoint variable names and fix sending of manual control setpoint mavlink message
mc att control: use new manual control setpoint variable names
mc pos control: use new manual control setpoint variable names
sensors: use new manual control setpoint variable names
Merge remote-tracking branch 'upstream/master' into manualcontrolrename

Conflicts:
	src/modules/commander/commander.cpp
	src/modules/fw_pos_control_l1/fw_pos_control_l1_main.cpp
	src/modules/uORB/topics/manual_control_setpoint.h
manual control setpoint: add comment about sign
Merge remote-tracking branch 'upstream/master' into manualcontrolrename

Conflicts:
	src/modules/fw_att_control/fw_att_control_main.cpp
Merge pull request #922 from PX4/manualcontrolrename

Rename variables for manual control setpoint