[pgpool-committers: 10353] 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=449bc8bc6ea30324b99c30ed55e8441d910114ed

Modified Files
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doc.ja/src/sgml/release-4.2.sgml | 135 +++++++++++++++++++++++++++++++++++
doc.ja/src/sgml/release-4.3.sgml | 135 +++++++++++++++++++++++++++++++++++
doc.ja/src/sgml/release-4.4.sgml | 135 +++++++++++++++++++++++++++++++++++
doc/src/sgml/release-4.2.sgml    | 147 +++++++++++++++++++++++++++++++++++++++
doc/src/sgml/release-4.3.sgml    | 147 +++++++++++++++++++++++++++++++++++++++
doc/src/sgml/release-4.4.sgml    | 147 +++++++++++++++++++++++++++++++++++++++
6 files changed, 846 insertions(+)