[pgpool-committers: 6553] pgpool: Doc: add release-notes.

[Bo Peng]

Doc: add release-notes.

Branch
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V3_6_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=6ddb2e66269b1c06193f4b9e363008c0162d3b37

Modified Files
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doc.ja/src/sgml/release-3.5.sgml | 108 ++++++++++++++++++++++++++++++++++
doc.ja/src/sgml/release-3.6.sgml | 122 +++++++++++++++++++++++++++++++++++++++
doc/src/sgml/release-3.5.sgml    |  77 ++++++++++++++++++++++++
doc/src/sgml/release-3.6.sgml    |  89 ++++++++++++++++++++++++++++
4 files changed, 396 insertions(+)