pgsql: Don't connect() to a wildcard address in test_postmaster_connect

Don't connect() to a wildcard address in test_postmaster_connection().

At least OpenBSD, NetBSD, and Windows don't support it. This repairs
pg_ctl for listen_addresses='0.0.0.0' and listen_addresses='::'. Since
pg_ctl prefers to test a Unix-domain socket, Windows users are most
likely to need this change. Back-patch to 9.1 (all supported versions).
This could change pg_ctl interaction with loopback-interface firewall
rules. Therefore, in 9.4 and earlier (released branches), activate the
change only on known-affected platforms.

Reported (bug #13611) and designed by Kondo Yuta.

Branch
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REL9_3_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/34725292d92d1ba643f46957803b45c3554b5d42

Modified Files
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src/bin/pg_ctl/pg_ctl.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)