It was downloaded from http://code.google.com/p/mysql-master-ha/

Upstream Author(s):
  Yoshinori Matsunobu <Yoshinori.Matsunobu@gmail.com>

Copyright:
  Copyright (C) 2011 DeNA Co.,Ltd.

License:
  GPLv2

  See `cat /usr/share/common-licenses/GPL-2`.

The Debian packaging is done by Yoshinori Matsunobu <Yoshinori.Matsunobu@gmail.com> in 2011, and is licensed under the GPL v2 license.

