KWSys 2019-01-22 (4fecfe6f)

Code extracted from:

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

at commit 4fecfe6f29be07ec165bcc87a20666425d928aa6 (master).

Upstream Shortlog
-----------------

Brad King (1):
      7a5e5af8 SystemTools: Revert "Fix FileIsSymlink with Windows data deduplication"

Tobias Kloss (1):
      ef373416 SystemTools: Fix FileIsSymlink with Windows data deduplication

Wouter Klouwen (1):
      8e9970fb SystemInformation: support BSD platforms for GetProcessId