[pgpool-committers: 4451] pgpool: Add 3.7.1 - 3.3.19 release-notes.

[Bo Peng]

Add 3.7.1 - 3.3.19 release-notes.

Branch
------
master

Details
-------
https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=42a15f654da76dbd29f66977d94b4745c52f556e

Modified Files
--------------
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.ja/src/sgml/release-3.7.sgml | 304 +++++++++++++++++++++++++++++++++++++++
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 ++++++++++++++++++++++-
doc/src/sgml/release-3.7.sgml    | 231 ++++++++++++++++++++++++++++-
10 files changed, 1643 insertions(+), 16 deletions(-)