[pgpool-committers: 5361] pgpool: Add release notes.

[Bo Peng]

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=00086d617b3f7603558b5970eee82d5cfdb5b950

Modified Files
--------------
doc.ja/src/sgml/release-3.4.sgml | 112 +++++++++++++++++++++++++++++++++++
doc.ja/src/sgml/release-3.5.sgml | 124 +++++++++++++++++++++++++++++++++++++++
doc.ja/src/sgml/release-3.6.sgml | 124 +++++++++++++++++++++++++++++++++++++++
doc.ja/src/sgml/version.sgml     |   2 +-
doc/src/sgml/release-3.4.sgml    |  79 +++++++++++++++++++++++++
doc/src/sgml/release-3.5.sgml    |  89 ++++++++++++++++++++++++++++
doc/src/sgml/release-3.6.sgml    |  89 ++++++++++++++++++++++++++++
doc/src/sgml/version.sgml        |   2 +-
8 files changed, 619 insertions(+), 2 deletions(-)