Merge pull request #3065 from dronecrew/lpe-no-eigen

.gitmodules

CMakeLists.txt

src/lib/eigen

src/lib/mathlib/math/Matrix.hpp

src/modules/commander/commander_helper.cpp

src/modules/controllib/blocks.cpp

src/modules/fw_pos_control_l1/mtecs/mTecs.cpp

src/modules/local_position_estimator/matrix/src/Matrix.hpp

src/modules/navigator/mission_block.cpp

src/platforms/common/CMakeLists.txt

src/platforms/px4_defines.h