Bluetooth devices, and bump libbluetooth minor version.
This is a reimplementation of an API largely developed by Maksim Yevmenkin
on FreeBSD to make it easier to port BlueZ/Linux programs which depend on
something similar. Alas, the BlueZ/Linux API is incompatible and unportable
as it depends on a 'device' being referenced by an int, but this will
hopefully make it easier to port software using that.
(bump libbluetooth minor version)
