[pgpool-committers: 9662] pgpool: Doc: add release notes of 4.0.25.

[Bo Peng]

Doc: add release notes of 4.0.25.

Conflicts:
        doc.ja/src/sgml/release-4.1.sgml
        doc.ja/src/sgml/release-4.2.sgml
        doc.ja/src/sgml/release-4.3.sgml
        doc.ja/src/sgml/release-4.4.sgml
        doc/src/sgml/release-4.1.sgml
        doc/src/sgml/release-4.2.sgml
        doc/src/sgml/release-4.3.sgml
        doc/src/sgml/release-4.4.sgml

Branch
------
V4_0_STABLE

Details
-------
https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=dd0d55409f9fa5aebfc0822727a08d3978f608e6

Modified Files
--------------
doc.ja/src/sgml/release-4.0.sgml | 22 ++++++++++++++++++++++
doc/src/sgml/release-4.0.sgml    | 24 ++++++++++++++++++++++++
2 files changed, 46 insertions(+)