Port libUSB support library to Windows.

[rpcope1]

It appears as though there is a working libUSB port for Windows, it would be good to unify the Windows and Linux libraries, especially since the default Hantek library does not support custom firmware.

This task currently appears to entail:

• Determine if there is a libusb binary that works with both x86 and x64 Windows XP, Vista, 7, and 8, (and possibly 10), and determine if it works with the Python libusb wrapper.
• Determine how to bundle this library in with a Windows installer, make deploying this library straightforward.
• Test and verify on a couple different Windows versions.