[pgpool-committers: 3980] pgpool: Add 3.6.3 - 3.2.20 release note.

[pengbo]

Add 3.6.3 - 3.2.20 release note.

Branch
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V3_6_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=bf4131ad28915831a7c79479e372dc6301af243c

Modified Files
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doc.ja/src/sgml/release-3.2.sgml |  26 ++++
doc.ja/src/sgml/release-3.3.sgml |  45 ++++++
doc.ja/src/sgml/release-3.4.sgml |  55 +++++++
doc.ja/src/sgml/release-3.5.sgml | 188 +++++++++++++++++++++++
doc.ja/src/sgml/release-3.6.sgml | 264 +++++++++++++++++++++++++++++++++
doc.ja/src/sgml/version.sgml     |   2 +-
doc/src/sgml/release-3.2.sgml    |  28 ++++
doc/src/sgml/release-3.3.sgml    |  47 ++++++
doc/src/sgml/release-3.4.sgml    |  57 +++++++
doc/src/sgml/release-3.5.sgml    | 231 +++++++++++++++++++++++++++++
doc/src/sgml/release-3.6.sgml    | 312 +++++++++++++++++++++++++++++++++++++++
doc/src/sgml/version.sgml        |   2 +-
12 files changed, 1255 insertions(+), 2 deletions(-)