[pgpool-committers: 4543] pgpool: Add release-notes 3.6.9 - 3.3.20.

[Bo Peng]

Add release-notes 3.6.9 - 3.3.20.

Branch
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V3_6_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=dd1a9de70ebe63fe6930467116586d87251ce2f1

Modified Files
--------------
doc.ja/src/sgml/release-3.3.sgml |  63 ++++++++++++++++
doc.ja/src/sgml/release-3.4.sgml |  88 ++++++++++++++++++++++
doc.ja/src/sgml/release-3.5.sgml | 143 ++++++++++++++++++++++++++++++++++++
doc.ja/src/sgml/release-3.6.sgml | 155 +++++++++++++++++++++++++++++++++++++++
doc.ja/src/sgml/version.sgml     |   2 +-
doc/src/sgml/release-3.3.sgml    |  49 +++++++++++++
doc/src/sgml/release-3.4.sgml    |  71 ++++++++++++++++++
doc/src/sgml/release-3.5.sgml    | 113 ++++++++++++++++++++++++++++
doc/src/sgml/release-3.6.sgml    | 125 +++++++++++++++++++++++++++++++
doc/src/sgml/version.sgml        |   2 +-
10 files changed, 809 insertions(+), 2 deletions(-)