[pgpool-committers: 8150] pgpool: Add release notes for Pgpool-II 4.1.9

[Masaya Kawamoto]

Add release notes for Pgpool-II 4.1.9

Branch
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V4_1_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=cea7ad0f75d3e6dcb9ed74d976ebb5deae085eff

Modified Files
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doc.ja/src/sgml/release-3.6.sgml | 166 ++++++++++++++++++++++++++++
doc.ja/src/sgml/release-3.7.sgml | 177 ++++++++++++++++++++++++++++++
doc.ja/src/sgml/release-4.0.sgml | 193 +++++++++++++++++++++++++++++++++
doc.ja/src/sgml/release-4.1.sgml | 217 +++++++++++++++++++++++++++++++++++++
doc/src/sgml/release-3.6.sgml    | 175 ++++++++++++++++++++++++++++++
doc/src/sgml/release-3.7.sgml    | 185 ++++++++++++++++++++++++++++++++
doc/src/sgml/release-4.0.sgml    | 201 ++++++++++++++++++++++++++++++++++
doc/src/sgml/release-4.1.sgml    | 226 +++++++++++++++++++++++++++++++++++++++
8 files changed, 1540 insertions(+)