[uClibc]gethostbyname_r fails when there's no /etc/hosts

[Mike McDonald]

  If both the /etc/hosts and /etc/config/hosts files do not exist,
get_hosts_byname_r() will set errno to ENOENT and return -1.
gethostbyname_r() then completely punts and returns -1. This even
happens if the call was gethostbyname("192.168.0.1") which it should
handle. The point of the error is line 1581 in libc/inet/resolv.c:

	switch (*h_errnop) {
		case HOST_NOT_FOUND:
		case NO_ADDRESS:
			break;
		default:
			return i;
	}

  should be something like:

	switch (*h_errnop) {
		case HOST_NOT_FOUND:
		case NO_ADDRESS:
			break;
		case NETDB_INTERNAL:
			if (errno == ENOENT)
				break;
			return i;
		default:
			return i;
	}

  Another approach to fixing this would be to move the inet_aton()
code ahead of the host table code.

  Oh, this is in version 0.9.11.

  Mike McDonald
  mikemac at mikemac.com