Windows 10 has finally surpassed Windows 7, at least when it comes to PC gamers on Steam.Previously, Windows 10 64-bit had become the single most popular strain of OS, but now the total number of Windows 10 users (both 32-bit and 64-bit) has outstripped the total number of Windows 7 gamers (32-bit and 64-bit).Last month, Windows 7 was still just a smidgen...