[pgpool-committers: 10354] pgpool: Doc: add release notes.

[Bo Peng]

Doc: add release notes.

Branch
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V4_2_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=b80b261d5b9e81c663092c9fb99bf568274e4556

Modified Files
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doc.ja/src/sgml/release-4.2.sgml | 135 +++++++++++++++++++++++++++++++++++
doc/src/sgml/release-4.2.sgml    | 147 +++++++++++++++++++++++++++++++++++++++
2 files changed, 282 insertions(+)