Add self-sufficient wrapper for <sys/stat.h>

Source/CPack/WiX/cmWIXFilesSourceWriter.cxx

Source/CPack/cmCPackCygwinSourceGenerator.cxx

Source/CPack/cmCPackDebGenerator.cxx

Source/CPack/cmCPackOSXX11Generator.cxx

Source/CPack/cmCPackSTGZGenerator.cxx

Source/CTest/cmCTestSubmitHandler.cxx

Source/QtDialog/CMakeSetup.cxx

Source/cmFileCommand.cxx

Source/cmFileTimeComparison.cxx

Source/cmGeneratorExpressionEvaluationFile.h

Source/cmMakefile.cxx

Source/cmQtAutoGeneratorInitializer.cxx

Source/cmSystemTools.cxx

Source/cmSystemTools.h

Source/cmWriteFileCommand.cxx

Source/cm_sys_stat.h

Source/cmake.cxx