bump(dev-libs/libusb): Sync libusb packages from upstream.

coreos/coreos-overlay@2b3dd492af0513c6c44b3f8f415f55b9700a8bca removed
libusb-0.* but we need that version in addition to libusb-1.*
Merge pull request #18 from marineam/updates

bump(dev-libs/libusb): Sync libusb packages from upstream.