KWSys 2016-08-01 (560bcdbb)

Code extracted from:

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

at commit 560bcdbb972cbf4c7ea77010363c652b697b9933 (master).

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

Brad King (1):
      560bcdbb SystemTools: Factor out common `const char* GetEnv()` private implementation

James Johnston (1):
      1c147abb Directory: Use Windows API wherever possible and port to Embarcadero