[pgpool-committers: 7737] 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=fc82ff42e51d087028fc9f77bacc422b6aaf4324

Modified Files
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doc.ja/src/sgml/release-3.6.sgml | 80 ++++++++++++++++++++++++++++++++++++++++
doc.ja/src/sgml/version.sgml     |  2 +-
doc/src/sgml/release-3.6.sgml    | 71 +++++++++++++++++++++++++++++++++++
doc/src/sgml/version.sgml        |  2 +-
4 files changed, 153 insertions(+), 2 deletions(-)