[pgpool-committers: 7513] pgpool: Add release note.

[Bo Peng]

Add release note.

Branch
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V4_1_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=0ff68500d4d517fd3325b6a467a5d824108b3d2d

Modified Files
--------------
doc.ja/src/sgml/release-3.6.sgml | 107 ++++++++++++++++++++++++
doc.ja/src/sgml/release-3.7.sgml | 116 ++++++++++++++++++++++++++
doc.ja/src/sgml/release-4.0.sgml | 145 ++++++++++++++++++++++++++++++++
doc.ja/src/sgml/release-4.1.sgml | 174 +++++++++++++++++++++++++++++++++++++++
doc.ja/src/sgml/version.sgml     |   2 +-
doc/src/sgml/release-3.6.sgml    |  95 +++++++++++++++++++++
doc/src/sgml/release-3.7.sgml    | 104 +++++++++++++++++++++++
doc/src/sgml/release-4.0.sgml    | 134 ++++++++++++++++++++++++++++++
doc/src/sgml/release-4.1.sgml    | 162 ++++++++++++++++++++++++++++++++++++
doc/src/sgml/version.sgml        |   2 +-
10 files changed, 1039 insertions(+), 2 deletions(-)