mpi4py 2019-11-27 (55be1ff2)

Code extracted from:

https://gitlab.kitware.com/third-party/mpi4py.git

at commit 55be1ff277747d083d07cf17b0fb2254336aff09 (for/vtk-20191127-3.0.3).

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Backport: paraview/release
Backport: release