atalk_aton(3) on Linux

The text f0374f68617a, as Debian 2.2 (Potato), Debian 2.1 (Slink), Debian 2.0 (Hamm), Debian 1.3 (Bo), Debian 1.2 (Rex), Debian 1.1 (Buzz) shipped it.

AppleTalk address parsing

atalk_aton(3) on Linux now