Download Driver For libusb 0.1.6a

A new version of libusb can be spotted on SourceForge.net. It concerns version 0.16a. libusb is a library that allows linux users to use USB devices. The gigantic laundry list of notes is as follows:

This fixes 2 small typos that caused compile problems with the legacy BSD support
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libusb is being given away under the GPL