port/netif.h		1993/0525		Created.
		1994/0629		Add Netif.all. Comment edits.
		1995/0113		Comment edit.
		1995/0711		Add Netif.soverflows.
		1995/0804		Add Nifstatqid. Comment edit.
		1996/0706		Remove Netif.out.
		1997/0327		Whitespace edit. Add static buffer for name. Add netifbread. Remove etherbcast.
		1997/0401		Add Netaddr], Netif.maddr, Netif.multicast.
		1997/0403		In Netfile: add maddr, nmaddr. Add Netfile.nmaddr.
		1997/0404		Add Netaddr.hnext for hash table in Netif.mhash.
		1999/0316		Add Naddrqid.
		1999/0625		Add Netif.bridge, Netif.headersonly.
		2001/0527		Convert to 9P2000. Cast arg to ulong to avoid vlong ops. Change netifwalk, netifwstat, netifstat.
		2003/0118		Add Netfile.scan, Netif.scan, Netif.scanbs for base stations.
		2003/0209		Add Netif.mbps.