[issue25815] Improper subprocess output of arguments with braces in them on windows

[Anthony Sottile]

Anthony Sottile added the comment:

To clarify further, the echo.exe on my path reacts correctly:

```
Anthony at AnthonysDesktop MINGW64 ~/Desktop/git/pre-commit (allow_curly_braces_in_args)
$ /usr/bin/echo hi{1}
hi{1}
Anthony at AnthonysDesktop MINGW64 ~/Desktop/git/pre-commit (allow_curly_braces_in_args)
$ 'C:\Users\Anthony\AppData\Local\Programs\Git\usr\bin\echo.exe' hi{1}
hi{1}

```

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue25815>
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