[pgpool-committers: 10037] pgpool: Doc: add release notes.

[Bo Peng]

Doc: add release notes.

Branch
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V4_4_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=10a14e81d63b5b27c03a583cbe5b3db24418f2fc

Modified Files
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doc.ja/src/sgml/release-4.1.sgml | 168 +++++++++++++++++++++++++
doc.ja/src/sgml/release-4.2.sgml | 196 +++++++++++++++++++++++++++++
doc.ja/src/sgml/release-4.3.sgml | 223 +++++++++++++++++++++++++++++++++
doc.ja/src/sgml/release-4.4.sgml | 248 ++++++++++++++++++++++++++++++++++++
doc/src/sgml/release-4.1.sgml    | 181 +++++++++++++++++++++++++++
doc/src/sgml/release-4.2.sgml    | 210 +++++++++++++++++++++++++++++++
doc/src/sgml/release-4.3.sgml    | 238 +++++++++++++++++++++++++++++++++++
doc/src/sgml/release-4.4.sgml    | 264 +++++++++++++++++++++++++++++++++++++++
8 files changed, 1728 insertions(+)