Adding left type expression and right type expression

src/Draw/DrawParticles.hpp

src/Draw/DrawParticles_unit_tests.hpp

src/Draw/PointIterator.hpp

src/Draw/PointIteratorSkin.hpp

src/FiniteDifference/Derivative.hpp

src/FiniteDifference/FDScheme.hpp

src/FiniteDifference/eq_unit_test_3d.hpp

src/FiniteDifference/mul.hpp

src/Operators/Vector/vector_dist_operator_assign.hpp

src/Operators/Vector/vector_dist_operators.hpp

src/Operators/Vector/vector_dist_operators_apply_kernel.hpp

.../Vector/vector_dist_operators_apply_kernel_unit_tests.hpp

src/Operators/Vector/vector_dist_operators_unit_tests.hpp

src/PSE/Kernels_test_util.hpp

src/main.cpp

...lver<double>_lid_driven_cavity_3d_p2_grid_0_test_GCC6.vtk

...lver<double>_lid_driven_cavity_3d_p2_grid_1_test_GCC6.vtk

...lver<double>_lid_driven_cavity_3d_p3_grid_0_test_GCC6.vtk

...lver<double>_lid_driven_cavity_3d_p3_grid_1_test_GCC6.vtk

...lver<double>_lid_driven_cavity_3d_p3_grid_2_test_GCC6.vtk