Config-less mode

[mrdomino]

I could pay some complexity and remove the need to recompile autonet every time you create a new profile if I just parsed the hostname.if(5) files under /etc/hostname.d at runtime.

Unfortunately the only parser I can find for hostname.if(5) files is written in Bourne shell and named /etc/netstart. But I suppose it wouldn't be too bad to grep for "^nwid", "^bssid", etc. and parse those values. I wonder what happens if an nwid is quoted and contains a newline...