Rework the OpenBSD backend to add *basic support* for non ugen(4) devices.
It is now possible to have a read access and submit control transfers to
all USB devices using libusb, please note that controllers and hubs also
appear as devices.
The library has to be specifically and non-trivially ported to each
platform it supports and currently it is not ported to DragonFly.
Moveover, FreeBSD's USB stack, which uses the same API, is intended to
ported to DragonFly in the near future.
libusb is a library for USB device access from Linux, Mac OS X,
OpenBSD, NetBSD, and Windows userspace.
This package contains major version 1 of the library.