[google style] Reinforce google style.

include/sot/core/double-constant.hh

include/sot/core/gain-adaptive.hh

include/sot/core/integrator-euler.hh

include/sot/core/memory-task-sot.hh

src/matrix/double-constant.cpp

src/matrix/matrix-constant-command.h

src/matrix/matrix-constant.cpp

src/matrix/vector-constant-command.h

src/matrix/vector-constant.cpp

src/sot/sot.cpp

unitTesting/features/test_feature_generic.cpp