Jan Vrany <jan.vrany@fit.cvut.cz> [Sun, 03 May 2015 22:21:27 +0100] rev 18339
Win/x86_64: do not declare prototype for _get_osfhandle() under MINGW
as the function prototype is declared in MINGW's headers. Moreover,
declaration is conflicting, causing Win32OperatingSystem fail to compile.