KWSys 2021-04-19 (d6139c66)

Code extracted from:

    https://gitlab.kitware.com/utils/kwsys.git

at commit d6139c66c8760552ab6bc4a08401ae8105217469 (master).

Upstream Shortlog
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Orgad Shaneh (3):
      17f4af9b SystemTools: Use octal base for error messages in permission test
      f00dd83e SystemTools: Avoid unnecessary assumption of working directory in test case
      5b941f33 SystemTools: Adapt permissions test to MSYS