and inet_network() to match XNS and (where applicable) POSIX. This is largely
just the replacement of unsigned long with in_addr_t.
This constitutes a small ABI change on sh5, but scw (sh5 portmaster) thinks
that both the users of that port will be able to cope. kleink claims the
change is ABI-neutral on other LP64 ports, and it's a no-op on ILP32 ports.
Hence, I'm doing it this way and avoiding the whole __RENAME dance.