KWSys 2019-11-13 (e67ed8ef)

Code extracted from:

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

at commit e67ed8efaf193036a92b648eec2ea71fabc0c05a (master).

Upstream Shortlog
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Brad King (2):
      b019deea RegularExpression: Suppress VS 2013 warning C4351
      a5248df0 CTestCustom: Suppress PGI Community Edition compiler license warnings

Paul Smith (1):
      dfd0521e Terminal: Support GNU make's TTY notification environment variable

Todd Martin (2):
      0492cad3 SystemTools: Remove redundant ToWindowsExtendedPath calls
      680ab6d2 FStream: Expose is_open publicly