KWSys 2018-05-18 (5357cfc4)

Code extracted from:

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

at commit 5357cfc4af0cbef4c78df5834ff0440cee3148d1 (master).

Upstream Shortlog
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Peter Wu (1):
      898dc6b9 SystemTools: Fix GetLineFromStream to avoid libc++ bug on OS X 10.7