[pgpool-committers: 4868] pgpool: Add release-notes 3.3.22-3.7.5.

[Bo Peng]

Add release-notes 3.3.22-3.7.5.

Branch
------
V3_6_STABLE

Details
-------
https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=e309b1282e1618b95086b459ccc45bb9dacaa803

Modified Files
--------------
doc.ja/src/sgml/release-3.3.sgml |  58 +++++++++++++++++
doc.ja/src/sgml/release-3.4.sgml |  97 ++++++++++++++++++++++++++++
doc.ja/src/sgml/release-3.5.sgml |  99 ++++++++++++++++++++++++++++
doc.ja/src/sgml/release-3.6.sgml | 136 +++++++++++++++++++++++++++++++++++++++
doc/src/sgml/release-3.3.sgml    |  39 +++++++++++
doc/src/sgml/release-3.4.sgml    |  70 ++++++++++++++++++++
doc/src/sgml/release-3.5.sgml    |  70 ++++++++++++++++++++
doc/src/sgml/release-3.6.sgml    |  97 +++++++++++++++++++++++++++-
8 files changed, 665 insertions(+), 1 deletion(-)