added final operator report, fixed topology reports and tags

examples/analytic/analytic.py

examples/example_utils.py

examples/particles_above_salt/particles_above_salt.py

examples/scalar_advection/scalar_advection.py

examples/scalar_diffusion/scalar_diffusion.py

examples/shear_layer/shear_layer.py

examples/taylor_green/taylor_green.py

hysop/__init__.py

hysop/backend/device/opencl/opencl_array_backend.py

hysop/backend/device/opencl/opencl_env.py

hysop/backend/device/opencl/opencl_fft.py

hysop/backend/device/opencl/operator/poisson_rotational.py

hysop/backend/host/host_array_backend.py

hysop/constants.py

hysop/constants.py.in

hysop/core/arrays/array_backend.py

hysop/core/graph/computational_graph.py

hysop/core/memory/allocator.py

hysop/core/mpi/redistribute.py

hysop/operator/analytic.py