Add 4.7 release note in Japanese and modify 4.7 release date.
Branch
------
master
Details
-------
https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=4d5c0a45a6816c311c21bcfae175c87d6e4970da
Modified Files
--------------
doc.ja/src/sgml/filelist.sgml | 1 +
doc.ja/src/sgml/release-4.7.sgml | 524 +++++++++++++++++++++++++++++++++++++++
doc.ja/src/sgml/release.sgml | 1 +
doc/src/sgml/release-4.7.sgml | 2 +-
4 files changed, 527 insertions(+), 1 deletion(-)