Microsoft Windows SDK versions for specified MSVC++ version.

def WindowsSdkVersion(self):
        """
        Microsoft Windows SDK versions for specified MSVC++ version.
        """
        if self.vc_ver <= 9.0:
            return ('7.0', '6.1', '6.0a')
        elif self.vc_ver == 10.0:
            return ('7.1', '7.0a')
        elif self.vc_ver == 11.0:
            return ('8.0', '8.0a')
        elif self.vc_ver == 12.0:
            return ('8.1', '8.1a')
        elif self.vc_ver >= 14.0:
            return ('10.0', '8.1')