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This commit adds several geometric constructs to vtk-m
in the `vtkm/Geometry.h` header. They may be used from
both the execution and control environments.

We also add methods to perform projection and Gram-Schmidt
orthonormalization to `vtkm/VectorAnalysis.h`.

See `docs/changelog/geometry.md` included in this commit
for more information.

Code extracted from:

    https://gitlab.kitware.com/third-party/taotuple.git

at commit ae4936580baf117373e73c23f0f8407d7589e6ff (for/vtk-m).

This keeps the old name around but prepares it for removal
in the next release.

Previously types such as vtkm::Id or vtkm::U/Int32 would be cast to whatever
the weight type was. This is problematic as they should actually be casted to
a double type as the weight type could be a float and therefore the results

These changes now allow VTK-m to compile on CUDA 7.5 by using const arrays,
when compiling with CUDA 8+ support we upgrade to static const arrays, and
lastly when CUDA is disabled we fully elevate to static constexpr.

Found via `codespell -q 3` via downstream VTK

Previously FloatPointReturnType would always be double for types that
are not float, which caused Int8/Int16 types to promote to double instead
of float.

Sandia National Laboratories recently changed management from the
Sandia Corporation to the National Technology & Engineering Solutions
of Sandia, LLC (NTESS). The copyright statements need to be updated
accordingly.

clang-format BinPack settings have been disabled to make sure that the
VTK-m style guideline is obeyed.

Unary operations on scalars and vectors will return vtkm::Float64 for
integral input types and vtkm::Float64 input types. Unary operations will
return vtkm::Float32 for vtkm::Float32 input vectors and scalars.

Modified the vector magnitude worklet to accept VecAll instead
of Vec3 and return Scalar. Modified the Magnitude() and Sqrt() functions
to return FloatDefault for all inputs except for Float64.

Perhaps we should modify other functions in Math.h and VectorAnalysis.h to
return float types for intergral arguments instead of integral types?

Change the VTKM_CONT_EXPORT to VTKM_CONT. (Likewise for EXEC and
EXEC_CONT.) Remove the inline from these macros so that they can be
applied to everything, including implementations in a library.

Because inline is not declared in these modifies, you have to add the
keyword to functions and methods where the implementation is not inlined
in the class.

Using v0+w*(v1-v0) can be numerically unstaqble due to floating point
arithmatic errors.  Additionaly, the newer form also resolves type
conversion warnings.

Also tests the current parametric coordinates methods. The added test
lead to some minor corrections and additions.