[pgpool-committers: 10510] pgpool: Doc: add release note.

[Bo Peng]

Doc: add release note.

Branch
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V4_6_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=bd375ee7e9f38ca74aa1a73444f895200ab7430c

Modified Files
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doc.ja/src/sgml/release-4.6.sgml | 64 ++++++++++++++++++++++++++++++++++++++
doc/src/sgml/release-4.6.sgml    | 67 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 131 insertions(+)