[pgpool-committers: 8254] pgpool: Add release notes.

[Masaya Kawamoto]

Add release notes.

Branch
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V4_0_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=ed64f3d6c45f0aa42b1f4a5c73fb9053e7f9da1b

Modified Files
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doc.ja/src/sgml/release-3.7.sgml | 33 +++++++++++++++++++++++++++++++++
doc.ja/src/sgml/release-4.0.sgml | 33 +++++++++++++++++++++++++++++++++
doc.ja/src/sgml/version.sgml     |  2 +-
doc/src/sgml/release-3.7.sgml    | 33 +++++++++++++++++++++++++++++++++
doc/src/sgml/release-4.0.sgml    | 33 +++++++++++++++++++++++++++++++++
doc/src/sgml/version.sgml        |  2 +-
6 files changed, 134 insertions(+), 2 deletions(-)