GitLab

Added simple proof-of-concept Mesh::Redistribute() test.

Initial box mesh is distributed in chess-board fashion shifting from one
process to another several times.

In case (np=2) also check that adding 1 layer of ghost cells will cover
the whole mesh.

Wiki page for this test:
https://github.com/INMOST-DEV/INMOST/wiki/5300-Chessboard-Redistribute