Add release note.
Branch
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V4_3_STABLE
Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=c2cbff68cd4cda968569b17318a9351d7e6a1beb
Modified Files
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doc.ja/src/sgml/release-4.3.sgml | 150 ++++++++++++++++++++++++++++++++++++
doc/src/sgml/release-4.3.sgml | 159 +++++++++++++++++++++++++++++++++++++++
2 files changed, 309 insertions(+)