KWSys 2016-07-18 (19732229)

Code extracted from:

    http://public.kitware.com/KWSys.git

at commit 19732229f798419307782ea7d252b78701911ea3 (master).

Upstream Shortlog
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Dāvis Mosāns (1):
      19732229 SystemTools: User better GetEnv and HasEnv signatures