isatty for windows

[Tatsuro M. <tma...@ya...>]

Hello

I have found that isatty is deprecated for visual studio 2013.
http://msdn.microsoft.com/en-us/library/ms235388.aspx


The page suggest to use _isatty instead.

The isatty function is used even in windows related codes.

This is mere information.

Tatsuro