adapted to new vehicle attitude message

msg/vehicle_attitude.msg

src/drivers/bst/bst.cpp

...ples/ekf_att_pos_estimator/ekf_att_pos_estimator_main.cpp

...ples/mc_att_control_multiplatform/mc_att_control_base.cpp

src/examples/mc_pos_control_multiplatform/mc_pos_control.cpp

src/examples/px4_simple_app/px4_simple_app.c

src/lib/terrain_estimation/terrain_estimator.cpp

...odules/attitude_estimator_q/attitude_estimator_q_main.cpp

src/modules/commander/accelerometer_calibration.cpp

src/modules/commander/commander.cpp

src/modules/ekf2/ekf2_main.cpp

src/modules/mavlink/mavlink_messages.cpp

src/modules/mavlink/mavlink_receiver.cpp

.../position_estimator_inav/position_estimator_inav_main.cpp

src/modules/sdlog2/sdlog2.c

src/modules/vtol_att_control/tailsitter.cpp