[pgpool-committers: 8757] pgpool: Doc: add release notes.

[Bo Peng]

Doc: add release notes.

Branch
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V4_1_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=8cf81720fc3cd37aebb36233dc8e8d67174c522c

Modified Files
--------------
doc.ja/src/sgml/release-3.7.sgml | 128 +++++++++++++++++++++
doc.ja/src/sgml/release-4.0.sgml | 147 ++++++++++++++++++++++++
doc.ja/src/sgml/release-4.1.sgml | 237 +++++++++++++++++++++++++++++++++++++++
doc/src/sgml/release-3.7.sgml    | 124 ++++++++++++++++++++
doc/src/sgml/release-4.0.sgml    | 143 +++++++++++++++++++++++
doc/src/sgml/release-4.1.sgml    | 210 ++++++++++++++++++++++++++++++++++
6 files changed, 989 insertions(+)