Merge branch 'upstream-kwsys' into update-kwsys

Source/kwsys/CMakeLists.txt

Source/kwsys/Configure.hxx.in

Source/kwsys/Directory.cxx

Source/kwsys/DynamicLoader.cxx

Source/kwsys/Encoding.h.in

Source/kwsys/Encoding.hxx.in

Source/kwsys/EncodingC.c

Source/kwsys/EncodingCXX.cxx

Source/kwsys/FStream.hxx.in

Source/kwsys/ProcessWin32.c

Source/kwsys/SystemInformation.cxx

Source/kwsys/SystemTools.cxx

Source/kwsys/SystemTools.hxx.in

Source/kwsys/kwsysPlatformTestsCXX.cxx

Source/kwsys/testEncoding.cxx