[pgpool-committers: 8413] pgpool: Add release notes.

[Masaya Kawamoto]

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=c938bb2f6de92fae8c1f0d04e8aeaff25df5c43c

Modified Files
--------------
doc.ja/src/sgml/release-3.7.sgml  | 199 ++++++++++++++++++++++++++++
doc.ja/src/sgml/release-4.0.sgml  | 222 +++++++++++++++++++++++++++++++
doc.ja/src/sgml/release-4.1.sgml  | 260 ++++++++++++++++++++++++++++++++++++
doc.ja/src/sgml/restrictions.sgml |   7 +-
doc.ja/src/sgml/version.sgml      |   2 +-
doc/src/sgml/release-3.7.sgml     | 204 +++++++++++++++++++++++++++++
doc/src/sgml/release-4.0.sgml     | 229 ++++++++++++++++++++++++++++++++
doc/src/sgml/release-4.1.sgml     | 269 ++++++++++++++++++++++++++++++++++++++
doc/src/sgml/restrictions.sgml    |   5 +-
doc/src/sgml/version.sgml         |   2 +-
10 files changed, 1390 insertions(+), 9 deletions(-)