Unfortunately not all systems claiming POSIX support actually define
AI_ADDRCONFIG macro, and those who define it not always implement it
(this is indeed optional). This patch makes ftpfs only set AI_ADDRCONFIG
flag to speed up lookups if it is defined, and in this case, retry the
lookup if it was rejected due to unimplemented flags.
Based upon the code by Joe Orton <jorton@redhat.com> from APR:
Copyright (C) 2003 Red Hat, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
Signed-off-by: Yury V. Zaytsev <yury@shurup.com>
afd8ec8934