message: copy -> move
diff: @@ -7,7 +7,7 @@ chcp 65001
  if not exist ninja (
  md ninja
  )
  -copy /Y build\msvc\make.ninja ninja\msvc.ninja
  -copy /Y build\mingw\make.ninja ninja\mingw.ninja
  -copy /Y build\linux\make.ninja ninja\linux.ninja
  -copy /Y build\macos\make.ninja ninja\macos.ninja
  +move /Y build\msvc\make.ninja ninja\msvc.ninja
  +move /Y build\mingw\make.ninja ninja\mingw.ninja
  +move /Y build\linux\make.ninja ninja\linux.ninja
  +move /Y build\macos\make.ninja ninja\macos.ninja
  