KWSys 2018-06-14 (2b0ca1d8)

Code extracted from:

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

at commit 2b0ca1d85d6e3fcf3b3fa375783c33524629f256 (master).

Upstream Shortlog
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Marian Klymov (3):
      0b9f51a1 Remove redundant calls to c_str
      361e54e3 Get rid of redundant string initialization
      61501133 SystemInformation: Avoid use of dangling pointers on Solaris