Make slow_select() test pass on Windows.
Make slow_select() test pass on Windows.

Martiusweb/asyncio,jashandeep-sohi/asyncio,jashandeep-sohi/asyncio,gsb-eng/asyncio,ajdavis/asyncio,haypo/trollius,vxgmichel/asyncio,1st1/asyncio,ajdavis/asyncio,manipopopo/asyncio,gvanrossum/asyncio,gvanrossum/asyncio,vxgmichel/asyncio,fallen/asyncio,manipopopo/asyncio,fallen/asyncio,Martiusweb/asyncio,vxgmichel/asyncio,jashandeep-sohi/asyncio,ajdavis/asyncio,1st1/asyncio,1st1/asyncio,gvanrossum/asyncio,haypo/trollius,Martiusweb/asyncio,gsb-eng/asyncio,gsb-eng/asyncio,haypo/trollius,manipopopo/asyncio,fallen/asyncio