[pgpool-hackers: 3836] Incosistency in our doc

[Tatsuo Ishii]

There are some confusions/inconsistency in our doc regarding supported
PostgreSQL versions.

In intro.sgml:
Supported PostgreSQL server's versions are 6.4 and higher.  If you are
using <productname>PostgreSQL</productname> 7.3 or older, some
features of <productname>Pgpool-II</productname> won't be available.

In restrictions.sgml:
libpq is linked while building <productname>Pgpool-II</productname>.
libpq version must be 3.0 or later. Building
<productname>Pgpool-II</productname> with libpq version 2.0 will fail.

In example-basic.sgml:
<productname>Pgpool-II</productname> requires <literal>libpq</literal>
library in <productname>PostgreSQL</productname> 7.4 or later (version
3 protocol).

So it seems qthe right answer to the supported versions is PostgreSQL
7.4 or later.  Attached is the patch to fix that.

Best regards,
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese:http://www.sraoss.co.jp
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