[MariaDB Packagers] MariaDB Galera Cluster 5.5.59 release prep

Prep work for the MariaDB Galera Cluster 5.5.59 release has begun. Expected release date is Tue 23 Jan 2018. Draft release notes and changelog: - https://mariadb.com/kb/en/library/mgc-5559-rn/ - https://mariadb.com/kb/en/library/mgc-5559-cl/ As usual, the release notes and changelog are still in draft form at this time and will be updated prior to release. Thanks. -- Daniel Bartholomew, MariaDB Release Manager MariaDB | http://mariadb.com