[pgpool-committers: 9658] pgpool: Doc: add release notes of 4.0.25-4.4.5.

[Bo Peng]

Doc: add release notes of 4.0.25-4.4.5.

Branch
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V4_2_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=07faef82d37b52e0ef0933dfdd50f39eeb28220b

Modified Files
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doc.ja/src/sgml/release-4.0.sgml |  22 ++++++
doc.ja/src/sgml/release-4.1.sgml | 104 ++++++++++++++++++++++++++
doc.ja/src/sgml/release-4.2.sgml | 142 +++++++++++++++++++++++++++++++++++
doc/src/sgml/release-4.0.sgml    |  24 ++++++
doc/src/sgml/release-4.1.sgml    | 117 +++++++++++++++++++++++++++++
doc/src/sgml/release-4.2.sgml    | 158 +++++++++++++++++++++++++++++++++++++++
6 files changed, 567 insertions(+)