[pgpool-committers: 4453] pgpool: Add 3.6.8 - 3.3.19 release-notes.

[Bo Peng]

Add 3.6.8 - 3.3.19 release-notes.

Branch
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V3_6_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=44556fc185fb5d4f039038c677817d9ffa697c31

Modified Files
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doc.ja/src/sgml/release-3.3.sgml |  92 ++++++++++++++-
doc.ja/src/sgml/release-3.4.sgml | 119 ++++++++++++++++++-
doc.ja/src/sgml/release-3.5.sgml | 197 ++++++++++++++++++++++++++++++-
doc.ja/src/sgml/release-3.6.sgml | 245 +++++++++++++++++++++++++++++++++++++++
doc/src/sgml/release-3.3.sgml    |  63 ++++++++++
doc/src/sgml/release-3.4.sgml    |  81 +++++++++++++
doc/src/sgml/release-3.5.sgml    | 145 ++++++++++++++++++++++-
doc/src/sgml/release-3.6.sgml    | 182 ++++++++++++++++++++++++++++-
8 files changed, 1113 insertions(+), 11 deletions(-)