'Get architecture based on msvs_configuration_platform and
msvs_target_platform. Returns either \'x86\' or \'x64\'.'

def GetArch(self, config):

    configuration_platform = self.msvs_configuration_platform.get(config, '')
    platform = self.msvs_target_platform.get(config, '')
    if (not platform):
        platform = configuration_platform
    return {'Win32': 'x86', 'x64': 'x64'}.get(platform, 'x86')
