fails:File#chmod maps to Windows file attribute
fails:File#chmod with '0444' makes file readable and executable but not writable
fails:File#chmod with '0644' makes file readable and writable and also executable
fails:File.chmod maps to Windows file attribute
fails:File.chmod with '0444' makes file readable and executable but not writable
fails:File.chmod with '0644' makes file readable and writable and also executable
